Back-up Rings

Back-up Rings

 

Back-up rings (aka anti-extrusion rings) protect o’rings and help prevent extrusion in high pressure applications by closing the clearance gap and reducing friction by trapping lubricant in the area of the seal. Double acting applications (using bi-directional pressure) require the use of two back-up rings, one on either side of the o’ring.
In single acting applications (single sided pressure) where only one back-up ring is required, the back-up is located on the low pressure side of the o’ring; although it is often recommended that two back-ups be used in single acting applications to mitigate the possibility of installing the back-up on the wrong side of the o’ring.

Sealing Australia stocks a wide range of back-up rings to suit imperial and JIS metric sized o’rings. Compounds available: 90 Duro nitrile, 90 Duro Viton, Teflon and polyurethane.

Backup Rings

Imperial Contoured Back-up Sizes

Contoured back-ups are usually made of rubber and mimic the shape of an o’ring on one side to minimises distortion of the o’ring while under pressure.
 
Available in NBR90 and FKM90 (Viton)
 

1/16″ Contoured Back-up

Size reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
004 .096 .005 .053 .003 2.44 0.13 1.35 0.08
005 .127 .005 .053 .003 3.23 0.13 1.35 0.08
006 .140 .005 .053 .003 3.56 0.13 1.35 0.08
007 .171 .005 .053 .003 4.34 0.13 1.35 0.08
008 .202 .005 .053 .003 5.13 0.13 1.35 0.08
009 .234 .005 .053 .003 5.94 0.13 1.35 0.08
010 .265 .005 .053 .003 6.73 0.13 1.35 0.08
011 .327 .005 .053 .003 8.31 0.13 1.35 0.08
012 .390 .005 .053 .003 9.91 0.13 1.35 0.08
013 .455 .005 .053 .003 11.56 0.13 1.35 0.08
014 .518 .005 .053 .003 13.16 0.13 1.35 0.08
015 .580 .007 .053 .003 14.73 0.18 1.35 0.08
016 .643 .009 .053 .003 16.33 0.23 1.35 0.08
017 .705 .009 .053 .003 17.91 0.23 1.35 0.08
018 .768 .009 .053 .003 19.51 0.23 1.35 0.08
019 .830 .009 .053 .003 21.08 0.23 1.35 0.08
020 .893 .009 .053 .003 22.68 0.23 1.35 0.08
021 .955 .009 .053 .003 24.26 0.23 1.35 0.08
022 1.018 .010 .053 .003 25.86 0.25 1.35 0.08
023 1.080 .010 .053 .003 27.43 0.25 1.35 0.08
024 1.143 .010 .053 .003 29.03 0.25 1.35 0.08
025 1.205 .011 .053 .003 30.61 0.28 1.35 0.08
026 1.268 .011 .053 .003 32.21 0.28 1.35 0.08
027 1.330 .011 .053 .003 33.78 0.28 1.35 0.08
028 1.393 .013 .053 .003 35.38 0.33 1.35 0.08
029 1.518 .013 .053 .003 38.56 0.33 1.35 0.08
030 1.643 .013 .053 .003 41.73 0.33 1.35 0.08
031 1.768 .015 .053 .003 44.91 0.38 1.35 0.08
032 1.893 .015 .053 .003 48.08 0.38 1.35 0.08
033 2.018 .018 .053 .003 51.26 0.46 1.35 0.08
034 2.143 .018 .053 .003 54.43 0.46 1.35 0.08
035 2.268 .018 .053 .003 57.61 0.46 1.35 0.08
036 2.393 .018 .053 .003 60.78 0.46 1.35 0.08
037 2.518 .018 .053 .003 63.96 0.46 1.35 0.08
038 2.643 .020 .053 .003 67.13 0.51 1.35 0.08
039 2.768 .020 .053 .003 70.31 0.51 1.35 0.08
040 2.893 .020 .053 .003 73.48 0.51 1.35 0.08
041 3.018 .024 .053 .003 76.66 0.61 1.35 0.08
042 3.268 .024 .053 .003 83.01 0.61 1.35 0.08
043 3.518 .024 .053 .003 89.36 0.61 1.35 0.08
044 3.768 .027 .053 .003 95.71 0.69 1.35 0.08
045 4.018 .027 .053 .003 102.06 0.69 1.35 0.08
046 4.268 .030 .053 .003 108.41 0.76 1.35 0.08
047 4.518 .030 .053 .003 114.76 0.76 1.35 0.08
048 4.768 .030 .053 .003 121.11 0.76 1.35 0.08
049 5.018 .037 .053 .003 127.46 0.94 1.35 0.08
050 5.268 .037 .053 .003 133.81 0.94 1.35 0.08

 

3/32″ Contoured Back-up

Size reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
102 .077 .005 .086 .003 1.96 0.13 2.18 0.08
103 .109 .005 .086 .003 2.77 0.13 2.18 0.08
104 .140 .005 .086 .003 3.56 0.13 2.18 0.08
105 .171 .005 .086 .003 4.34 0.13 2.18 0.08
106 .202 .005 .086 .003 5.13 0.13 2.18 0.08
107 .234 .005 .086 .003 5.94 0.13 2.18 0.08
108 .265 .005 .086 .003 6.73 0.13 2.18 0.08
109 .327 .005 .086 .003 8.31 0.13 2.18 0.08
110 .390 .005 .086 .003 9.91 0.13 2.18 0.08
111 .452 .005 .086 .003 11.48 0.13 2.18 0.08
112 .515 .005 .086 .003 13.08 0.13 2.18 0.08
113 .577 .007 .086 .003 14.66 0.18 2.18 0.08
114 .640 .009 .086 .003 16.26 0.23 2.18 0.08
115 .702 .009 .086 .003 17.83 0.23 2.18 0.08
116 .765 .009 .086 .003 19.43 0.23 2.18 0.08
117 .831 .010 .086 .003 21.11 0.25 2.18 0.08
118 .893 .010 .086 .003 22.68 0.25 2.18 0.08
119 .956 .010 .086 .003 24.28 0.25 2.18 0.08
120 1.018 .010 .086 .003 25.86 0.25 2.18 0.08
121 1.081 .010 .086 .003 27.46 0.25 2.18 0.08
122 1.143 .010 .086 .003 29.03 0.25 2.18 0.08
123 1.206 .012 .086 .003 30.63 0.30 2.18 0.08
124 1.268 .012 .086 .003 32.21 0.30 2.18 0.08
125 1.331 .012 .086 .003 33.81 0.30 2.18 0.08
126 1.393 .012 .086 .003 35.38 0.30 2.18 0.08
127 1.456 .012 .086 .003 36.98 0.30 2.18 0.08
128 1.518 .012 .086 .003 38.56 0.30 2.18 0.08
129 1.581 .015 .086 .003 40.16 0.38 2.18 0.08
130 1.643 .015 .086 .003 41.73 0.38 2.18 0.08
131 1.706 .015 .086 .003 43.33 0.38 2.18 0.08
132 1.768 .015 .086 .003 44.91 0.38 2.18 0.08
133 1.831 .015 .086 .003 46.51 0.38 2.18 0.08
134 1.893 .015 .086 .003 48.08 0.38 2.18 0.08
135 1.956 .017 .086 .003 49.68 0.43 2.18 0.08
136 2.018 .017 .086 .003 51.26 0.43 2.18 0.08
137 2.081 .017 .086 .003 52.86 0.43 2.18 0.08
138 2.143 .017 .086 .003 54.43 0.43 2.18 0.08
139 2.206 .017 .086 .003 56.03 0.43 2.18 0.08
140 2.268 .017 .086 .003 57.61 0.43 2.18 0.08
141 2.331 .020 .086 .003 59.21 0.51 2.18 0.08
142 2.393 .020 .086 .003 60.78 0.51 2.18 0.08
143 2.456 .020 .086 .003 62.38 0.51 2.18 0.08
144 2.518 .020 .086 .003 63.96 0.51 2.18 0.08
145 2.581 .020 .086 .003 65.56 0.51 2.18 0.08
146 2.643 .020 .086 .003 67.13 0.51 2.18 0.08
147 2.706 .022 .086 .003 68.73 0.56 2.18 0.08
148 2.768 .022 .086 .003 70.31 0.56 2.18 0.08
149 2.831 .022 .086 .003 71.91 0.56 2.18 0.08
150 2.893 .022 .086 .003 73.48 0.56 2.18 0.08
151 3.018 .024 .086 .003 76.66 0.61 2.18 0.08
152 3.268 .024 .086 .003 83.01 0.61 2.18 0.08
153 3.518 .024 .086 .003 89.36 0.61 2.18 0.08
154 3.768 .028 .086 .003 95.71 0.71 2.18 0.08
155 4.018 .028 .086 .003 102.06 0.71 2.18 0.08
156 4.268 .030 .086 .003 108.41 0.76 2.18 0.08
157 4.518 .030 .086 .003 114.76 0.76 2.18 0.08
158 4.768 .030 .086 .003 121.11 0.76 2.18 0.08
159 5.018 .035 .086 .003 127.46 0.89 2.18 0.08
160 5.268 .035 .086 .003 133.81 0.89 2.18 0.08
161 5.518 .035 .086 .003 140.16 0.89 2.18 0.08
162 5.768 .035 .086 .003 146.51 0.89 2.18 0.08
163 6.018 .035 .086 .003 152.86 0.89 2.18 0.08
164 6.268 .040 .086 .003 159.21 1.02 2.18 0.08
165 6.518 .040 .086 .003 165.56 1.02 2.18 0.08
166 6.768 .040 .086 .003 171.91 1.02 2.18 0.08
167 7.018 .040 .086 .003 178.26 1.02 2.18 0.08
168 7.268 .045 .086 .003 184.61 1.14 2.18 0.08
169 7.518 .045 .086 .003 190.96 1.14 2.18 0.08
170 7.768 .045 .086 .003 197.31 1.14 2.18 0.08
171 8.018 .045 .086 .003 203.66 1.14 2.18 0.08
172 8.268 .050 .086 .003 210.01 1.27 2.18 0.08
173 8.518 .050 .086 .003 216.36 1.27 2.18 0.08
174 8.768 .050 .086 .003 222.71 1.27 2.18 0.08
175 9.018 .050 .086 .003 229.06 1.27 2.18 0.08
176 9.268 .055 .086 .003 235.41 1.40 2.18 0.08
177 9.518 .055 .086 .003 241.76 1.40 2.18 0.08
178 9.768 .055 .086 .003 248.11 1.40 2.18 0.08

 

1/8″ Contoured Back-up

Size reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
201 .202 .005 .118 .004 5.13 0.13 3.00 0.10
202 .265 .005 .118 .004 6.73 0.13 3.00 0.10
203 .327 .005 .118 .004 8.31 0.13 3.00 0.10
204 .390 .005 .118 .004 9.91 0.13 3.00 0.10
205 .455 .005 .118 .004 11.56 0.13 3.00 0.10
206 .518 .005 .118 .004 13.16 0.13 3.00 0.10
207 .580 .007 .118 .004 14.73 0.18 3.00 0.10
208 .643 .009 .118 .004 16.33 0.23 3.00 0.10
209 .705 .010 .118 .004 17.91 0.23 3.00 0.10
210 .766 .010 .118 .004 19.46 0.25 3.00 0.10
211 .828 .010 .118 .004 21.03 0.25 3.00 0.10
212 .891 .010 .118 .004 22.63 0.25 3.00 0.10
213 .953 .010 .118 .004 24.21 0.25 3.00 0.10
214 1.016 .010 .118 .004 25.81 0.25 3.00 0.10
215 1.078 .010 .118 .004 27.38 0.25 3.00 0.10
216 1.141 .012 .118 .004 28.98 0.30 3.00 0.10
217 1.203 .012 .118 .004 30.56 0.30 3.00 0.10
218 1.266 .012 .118 .004 32.16 0.30 3.00 0.10
219 1.334 .012 .118 .004 33.88 0.30 3.00 0.10
220 1.397 .012 .118 .004 35.48 0.30 3.00 0.10
221 1.459 .012 .118 .004 37.06 0.30 3.00 0.10
222 1.522 .015 .118 .004 38.66 0.38 3.00 0.10
223 1.647 .015 .118 .004 41.83 0.38 3.00 0.10
224 1.772 .015 .118 .004 45.01 0.38 3.00 0.10
225 1.897 .018 .118 .004 48.18 0.46 3.00 0.10
226 2.022 .018 .118 .004 51.36 0.46 3.00 0.10
227 2.147 .018 .118 .004 54.53 0.46 3.00 0.10
228 2.272 .020 .118 .004 57.71 0.51 3.00 0.10
229 2.397 .020 .118 .004 60.89 0.51 3.00 0.10
230 2.522 .020 .118 .004 64.06 0.51 3.00 0.10
231 2.631 .020 .118 .004 66.83 0.51 3.00 0.10
232 2.756 .024 .118 .004 70.00 0.61 3.00 0.10
233 2.881 .024 .118 .004 73.18 0.61 3.00 0.10
234 3.006 .024 .118 .004 76.35 0.61 3.00 0.10
235 3.131 .024 .118 .004 79.53 0.61 3.00 0.10
236 3.256 .024 .118 .004 82.70 0.61 3.00 0.10
237 3.381 .024 .118 .004 85.88 0.61 3.00 0.10
238 3.506 .024 .118 .004 89.05 0.61 3.00 0.10
239 3.631 .028 .118 .004 92.23 0.71 3.00 0.10
240 3.756 .028 .118 .004 95.40 0.71 3.00 0.10
241 3.881 .028 .118 .004 98.58 0.71 3.00 0.10
242 4.006 .028 .118 .004 101.75 0.71 3.00 0.10
243 4.131 .028 .118 .004 104.93 0.71 3.00 0.10
244 4.256 .030 .118 .004 108.10 0.76 3.00 0.10
245 4.381 .030 .118 .004 111.28 0.76 3.00 0.10
246 4.506 .030 .118 .004 114.45 0.76 3.00 0.10
247 4.631 .030 .118 .004 117.63 0.76 3.00 0.10
248 4.768 .030 .118 .004 121.11 0.76 3.00 0.10
249 4.893 .035 .118 .004 124.28 0.89 3.00 0.10
250 5.018 .035 .118 .004 127.46 0.89 3.00 0.10
251 5.143 .035 .118 .004 130.63 0.89 3.00 0.10
252 5.268 .035 .118 .004 133.81 0.89 3.00 0.10
253 5.393 .035 .118 .004 136.98 0.89 3.00 0.10
254 5.518 .035 .118 .004 140.16 0.89 3.00 0.10
255 5.643 .035 .118 .004 143.33 0.89 3.00 0.10
256 5.768 .035 .118 .004 146.51 0.89 3.00 0.10
257 5.893 .035 .118 .004 149.68 0.89 3.00 0.10
258 6.018 .035 .118 .004 152.86 0.89 3.00 0.10
259 6.268 .040 .118 .004 159.21 1.02 3.00 0.10
260 6.518 .040 .118 .004 165.56 1.02 3.00 0.10
261 6.768 .040 .118 .004 171.91 1.02 3.00 0.10
262 7.018 .040 .118 .004 178.26 1.02 3.00 0.10
263 7.268 .045 .118 .004 184.61 1.14 3.00 0.10
264 7.518 .045 .118 .004 190.96 1.14 3.00 0.10
265 7.768 .045 .118 .004 197.31 1.14 3.00 0.10
266 8.018 .045 .118 .004 203.66 1.14 3.00 0.10
267 8.268 .050 .118 .004 210.01 1.27 3.00 0.10
268 8.518 .050 .118 .004 216.36 1.27 3.00 0.10
269 8.768 .050 .118 .004 222.71 1.27 3.00 0.10
270 9.018 .050 .118 .004 229.06 1.27 3.00 0.10
271 9.268 .055 .118 .004 235.41 1.40 3.00 0.10
272 9.518 .055 .118 .004 241.76 1.40 3.00 0.10
273 9.768 .055 .118 .004 248.11 1.40 3.00 0.10
274 10.018 .055 .118 .004 254.46 1.40 3.00 0.10
275 10.518 .055 .118 .004 267.16 1.40 3.00 0.10
276 11.018 .065 .118 .004 279.86 1.65 3.00 0.10
277 11.518 .065 .118 .004 292.56 1.65 3.00 0.10
278 12.018 .065 .118 .004 305.26 1.65 3.00 0.10
279 13.018 .065 .118 .004 330.66 1.65 3.00 0.10
280 14.018 .065 .118 .004 356.06 1.65 3.00 0.10
281 15.018 .065 .118 .004 381.46 1.65 3.00 0.10
282 15.989 .075 .118 .004 406.12 1.91 3.00 0.10
283 16.989 .080 .118 .004 431.52 2.03 3.00 0.10
284 17.989 .085 .118 .004 456.92 2.16 3.00 0.10

 

3/16″ Contoured Back-up

Size reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
309 .450 .005 .183 .005 11.43 0.13 4.65 0.13
310 .513 .005 .183 .005 13.03 0.13 4.65 0.13
311 .575 .007 .183 .005 14.61 0.18 4.65 0.13
312 .638 .009 .183 .005 16.21 0.23 4.65 0.13
313 .700 .009 .183 .005 17.78 0.23 4.65 0.13
314 .763 .010 .183 .005 19.38 0.25 4.65 0.13
315 .825 .010 .183 .005 20.96 0.25 4.65 0.13
316 .888 .010 .183 .005 22.56 0.25 4.65 0.13
317 .950 .010 .183 .005 24.13 0.25 4.65 0.13
318 1.013 .010 .183 .005 25.73 0.25 4.65 0.13
319 1.075 .010 .183 .005 27.31 0.25 4.65 0.13
320 1.138 .012 .183 .005 28.91 0.30 4.65 0.13
321 1.200 .012 .183 .005 30.48 0.30 4.65 0.13
322 1.263 .012 .183 .005 32.08 0.30 4.65 0.13
323 1.316 .012 .183 .005 33.43 0.30 4.65 0.13
324 1.388 .012 .183 .005 35.26 0.30 4.65 0.13
325 1.513 .015 .183 .005 38.43 0.38 4.65 0.13
326 1.638 .015 .183 .005 41.61 0.38 4.65 0.13
327 1.763 .015 .183 .005 44.78 0.38 4.65 0.13
328 1.888 .015 .183 .005 47.96 0.38 4.65 0.13
329 2.013 .018 .183 .005 51.13 0.46 4.65 0.13
330 2.138 .018 .183 .005 54.31 0.46 4.65 0.13
331 2.268 .018 .183 .005 57.61 0.46 4.65 0.13
332 2.393 .018 .183 .005 60.78 0.46 4.65 0.13
333 2.518 .020 .183 .005 63.96 0.51 4.65 0.13
334 2.643 .020 .183 .005 67.13 0.51 4.65 0.13
335 2.768 .020 .183 .005 70.31 0.51 4.65 0.13
336 2.893 .020 .183 .005 73.48 0.51 4.65 0.13
337 3.018 .024 .183 .005 76.66 0.61 4.65 0.13
338 3.143 .024 .183 .005 79.83 0.61 4.65 0.13
339 3.273 .024 .183 .005 83.13 0.61 4.65 0.13
340 3.398 .024 .183 .005 86.31 0.61 4.65 0.13
341 3.523 .024 .183 .005 89.48 0.61 4.65 0.13
342 3.648 .028 .183 .005 92.66 0.71 4.65 0.13
343 3.773 .028 .183 .005 95.83 0.71 4.65 0.13
344 3.898 .028 .183 .005 99.01 0.71 4.65 0.13
345 4.028 .028 .183 .005 102.31 0.71 4.65 0.13
346 4.153 .028 .183 .005 105.49 0.71 4.65 0.13
347 4.278 .030 .183 .005 108.66 0.76 4.65 0.13
348 4.403 .030 .183 .005 111.84 0.76 4.65 0.13
349 4.528 .030 .183 .005 115.01 0.76 4.65 0.13
350 4.653 .030 .183 .005 118.19 0.76 4.65 0.13
351 4.778 .030 .183 .005 121.36 0.76 4.65 0.13
352 4.903 .030 .183 .005 124.54 0.76 4.65 0.13
353 5.028 .037 .183 .005 127.71 0.94 4.65 0.13
354 5.153 .037 .183 .005 130.89 0.94 4.65 0.13
355 5.278 .037 .183 .005 134.06 0.94 4.65 0.13
356 5.403 .037 .183 .005 137.24 0.94 4.65 0.13
357 5.528 .037 .183 .005 140.41 0.94 4.65 0.13
358 5.653 .037 .183 .005 143.59 0.94 4.65 0.13
359 5.778 .037 .183 .005 146.76 0.94 4.65 0.13
360 5.903 .037 .183 .005 149.94 0.94 4.65 0.13
361 6.028 .037 .183 .005 153.11 0.94 4.65 0.13
362 6.278 .040 .183 .005 159.46 1.02 4.65 0.13
363 6.528 .040 .183 .005 165.81 1.02 4.65 0.13
364 6.778 .040 .183 .005 172.16 1.02 4.65 0.13
365 7.028 .040 .183 .005 178.51 1.02 4.65 0.13
366 7.278 .045 .183 .005 184.86 1.14 4.65 0.13
367 7.528 .045 .183 .005 191.21 1.14 4.65 0.13
368 7.778 .045 .183 .005 197.56 1.14 4.65 0.13
369 8.028 .045 .183 .005 203.91 1.14 4.65 0.13
370 8.278 .050 .183 .005 210.26 1.27 4.65 0.13
371 8.528 .050 .183 .005 216.61 1.27 4.65 0.13
372 8.778 .050 .183 .005 222.96 1.27 4.65 0.13
373 9.028 .050 .183 .005 229.31 1.27 4.65 0.13
374 9.278 .055 .183 .005 235.66 1.40 4.65 0.13
375 9.528 .055 .183 .005 242.01 1.40 4.65 0.13
376 9.778 .055 .183 .005 248.36 1.40 4.65 0.13
377 10.028 .055 .183 .005 254.71 1.40 4.65 0.13
378 10.528 .060 .183 .005 267.41 1.52 4.65 0.13
379 11.028 .060 .183 .005 280.11 1.52 4.65 0.13
380 11.528 .065 .183 .005 292.81 1.65 4.65 0.13
381 12.028 .065 .183 .005 305.51 1.65 4.65 0.13
382 13.028 .065 .183 .005 330.91 1.65 4.65 0.13
383 14.028 .070 .183 .005 356.31 1.78 4.65 0.13
384 15.028 .070 .183 .005 381.71 1.78 4.65 0.13
385 16.008 .075 .183 .005 406.60 1.91 4.65 0.13
386 17.008 .080 .183 .005 432.01 2.03 4.65 0.13
387 18.008 .085 .183 .005 457.40 2.16 4.65 0.13
388 19.006 .090 .183 .005 482.75 2.29 4.65 0.13
389 20.006 .095 .183 .005 508.15 2.41 4.65 0.13
390 21.006 .095 .183 .005 533.55 2.41 4.65 0.13
391 22.006 .100 .183 .005 558.95 2.54 4.65 0.13
392 22.993 .105 .183 .005 584.02 2.67 4.65 0.13
393 23.993 .110 .183 .005 609.42 2.79 4.65 0.13
394 24.993 .115 .183 .005 634.82 2.92 4.65 0.13
395 25.993 .120 .183 .005 660.22 3.05 4.65 0.13

 

1/4″ Contoured Back-up

Size reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
425 4.551 .033 .236 .006 115.60 0.84 5.99 0.15
426 4.676 .033 .236 .006 118.77 0.84 5.99 0.15
427 4.801 .033 .236 .006 121.95 0.84 5.99 0.15
428 4.926 .033 .236 .006 125.12 0.84 5.99 0.15
429 5.051 .037 .236 .006 128.30 0.94 5.99 0.15
430 5.176 .037 .236 .006 131.47 0.94 5.99 0.15
431 5.301 .037 .236 .006 134.65 0.94 5.99 0.15
432 5.426 .037 .236 .006 137.82 0.94 5.99 0.15
433 5.551 .037 .236 .006 141.00 0.94 5.99 0.15
434 5.676 .037 .236 .006 144.17 0.94 5.99 0.15
435 5.801 .037 .236 .006 174.35 0.94 5.99 0.15
436 5.926 .037 .236 .006 150.52 0.94 5.99 0.15
437 6.051 .037 .236 .006 153.70 0.94 5.99 0.15
438 6.274 .040 .236 .006 159.40 1.02 5.99 0.15
439 6.524 .040 .236 .006 165.71 1.02 5.99 0.15
440 6.774 .040 .236 .006 172.06 1.02 5.99 0.15
441 7.024 .040 .236 .006 178.41 1.02 5.99 0.15
442 7.274 .045 .236 .006 184.76 1.14 5.99 0.15
443 7.524 .045 .236 .006 191.11 1.14 5.99 0.15
444 7.774 .045 .236 .006 197.46 1.14 5.99 0.15
445 8.024 .045 .236 .006 203.81 1.14 5.99 0.15
446 8.524 .055 .236 .006 216.51 1.40 5.99 0.15
447 9.024 .055 .236 .006 229.21 1.40 5.99 0.15
448 9.524 .055 .236 .006 241.91 1.40 5.99 0.15
449 10.024 .055 .236 .006 254.61 1.40 5.99 0.15
450 10.524 .060 .236 .006 267.31 1.52 5.99 0.15
451 11.024 .060 .236 .006 280.01 1.52 5.99 0.15
452 11.524 .060 .236 .006 292.71 1.52 5.99 0.15
453 12.024 .060 .236 .006 305.41 1.52 5.99 0.15
454 12.524 .060 .236 .006 318.11 1.52 5.99 0.15
455 13.024 .060 .236 .006 330.81 1.52 5.99 0.15
456 13.524 .070 .236 .006 343.51 1.78 5.99 0.15
457 14.024 .070 .236 .006 356.21 1.78 5.99 0.15
458 14.524 .070 .236 .006 368.91 1.78 5.99 0.15
459 15.024 .070 .236 .006 381.61 1.78 5.99 0.15
460 15.524 .070 .236 .006 394.31 1.78 5.99 0.15
461 16.004 .075 .236 .006 406.50 1.91 5.99 0.15
462 16.504 .075 .236 .006 419.20 1.91 5.99 0.15
463 17.004 .080 .236 .006 431.90 2.03 5.99 0.15
464 17.504 .085 .236 .006 444.60 2.16 5.99 0.15
465 18.004 .085 .236 .006 457.30 2.16 5.99 0.15
466 18.504 .085 .236 .006 470.00 2.16 5.99 0.15
467 19.004 .090 .236 .006 482.70 2.29 5.99 0.15
468 19.504 .090 .236 .006 495.40 2.29 5.99 0.15
469 20.004 .095 .236 .006 508.10 2.41 5.99 0.15
470 21.004 .095 .236 .006 533.50 2.41 5.99 0.15
471 22.004 .100 .236 .006 558.90 2.54 5.99 0.15
472 23.004 .105 .236 .006 584.30 2.67 5.99 0.15
473 24.004 .110 .236 .006 609.70 2.79 5.99 0.15
474 25.004 .115 .236 .006 635.10 2.92 5.99 0.15
475 26.004 .120 .236 .006 660.50 3.05 5.99 0.15

 

Imperial Solid Back-up Sizes

Solid back-ups are often made from harder plastics like PTFE (Teflon) and polyurethane and are of a flat washer type. Solid back-ups are non-split (no angle or scarf cut) and fall under the MS27595 sizing standard while split back-ups (with angle or scarf cut) are closer in size to a contoured back-up and tend to fall under the MS28774 sizing standard.

Available in PTFE (Teflon) and TPU (polyurethane).
 

1/16″ Solid Back-up

Includes MS27595
Ht= .050″ ±.002 (1.27mm ±0.05)

Size Reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
004 .080 .001 .055 .001 2.03 0.03 1.40 0.03
005 .111 .001 .055 .001 2.82 0.03 1.40 0.03
006 .125 .001 .055 .001 3.18 0.03 1.40 0.03
007 .156 .001 .055 .001 3.96 0.03 1.40 0.03
008 .187 .001 .055 .001 4.75 0.03 1.40 0.03
009 .219 .001 .055 .001 5.56 0.03 1.40 0.03
010 .250 .001 .055 .001 6.35 0.03 1.40 0.03
011 .312 .001 .055 .001 7.92 0.03 1.40 0.03
012 .375 .001 .055 .001 9.53 0.03 1.40 0.03
013 .440 .001 .055 .001 11.18 0.03 1.40 0.03
014 .503 .001 .055 .001 12.78 0.03 1.40 0.03
015 .565 .001 .055 .001 14.35 0.03 1.40 0.03
016 .628 .001 .055 .001 15.95 0.03 1.40 0.03
017 .690 .001 .055 .001 17.53 0.03 1.40 0.03
018 .753 .001 .055 .001 19.13 0.03 1.40 0.03
019 .815 .001 .055 .001 20.70 0.03 1.40 0.03
020 .881 .001 .055 .001 22.38 0.03 1.40 0.03
021 .943 .002 .055 .001 23.95 0.05 1.40 0.03
022 1.006 .002 .055 .001 25.55 0.05 1.40 0.03
023 1.068 .002 .055 .001 27.13 0.05 1.40 0.03
024 1.131 .002 .055 .001 28.73 0.05 1.40 0.03
025 1.193 .002 .055 .001 30.30 0.05 1.40 0.03
026 1.256 .002 .055 .001 31.90 0.05 1.40 0.03
027 1.318 .002 .055 .001 33.48 0.05 1.40 0.03
028 1.381 .002 .055 .001 35.08 0.05 1.40 0.03
029 1.506 .002 .055 .001 38.25 0.05 1.40 0.03
030 1.631 .002 .055 .001 41.43 0.05 1.40 0.03
031 1.756 .002 .055 .001 44.60 0.05 1.40 0.03
032 1.881 .002 .055 .001 47.78 0.05 1.40 0.03
033 2.086 .002 .055 .001 52.98 0.05 1.40 0.03
034 2.131 .002 .055 .001 54.13 0.05 1.40 0.03
035 2.256 .002 .055 .001 57.30 0.05 1.40 0.03
036 2.381 .002 .055 .001 60.48 0.05 1.40 0.03
037 2.506 .002 .055 .001 63.65 0.05 1.40 0.03
038 2.631 .002 .055 .001 66.83 0.05 1.40 0.03
039 2.756 .002 .055 .001 70.00 0.05 1.40 0.03
040 2.881 .002 .055 .001 73.18 0.05 1.40 0.03
041 3.006 .002 .055 .001 76.35 0.05 1.40 0.03
042 2.256 .002 .055 .001 57.30 0.05 1.40 0.03
043 3.506 .002 .055 .001 89.05 0.05 1.40 0.03
044 3.756 .002 .055 .001 95.40 0.05 1.40 0.03
045 4.006 .002 .055 .001 101.75 0.05 1.40 0.03
046 4.256 .002 .055 .001 108.10 0.05 1.40 0.03
047 4.506 .002 .055 .001 114.45 0.05 1.40 0.03
048 4.756 .002 .055 .001 120.80 0.05 1.40 0.03
049 5.006 .002 .055 .001 127.15 0.05 1.40 0.03
050 5.256 .002 .055 .001 133.50 0.05 1.40 0.03

 

3/32″ Solid Back-up

Includes MS27595
Ht= .050″ ±.002 (1.27mm ±0.05)

Size Reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
102 .061 .001 .088 .002 1.55 0.03 2.24 0.05
103 .093 .001 .088 .002 2.36 0.03 2.24 0.05
104 .124 .001 .088 .002 3.15 0.03 2.24 0.05
105 .155 .001 .088 .002 3.94 0.03 2.24 0.05
106 .186 .001 .088 .002 4.72 0.03 2.24 0.05
107 .218 .001 .088 .002 5.54 0.03 2.24 0.05
108 .249 .001 .088 .002 6.32 0.03 2.24 0.05
109 .311 .001 .088 .002 7.90 0.03 2.24 0.05
110 .374 .001 .088 .002 9.50 0.03 2.24 0.05
111 .437 .001 .088 .002 11.10 0.03 2.24 0.05
112 .499 .001 .088 .002 12.67 0.03 2.24 0.05
113 .562 .001 .088 .002 14.27 0.03 2.24 0.05
114 .624 .001 .088 .002 15.85 0.03 2.24 0.05
115 .687 .001 .088 .002 17.45 0.03 2.24 0.05
116 .749 .001 .088 .002 19.02 0.03 2.24 0.05
117 .815 .001 .088 .002 20.70 0.03 2.24 0.05
118 .877 .001 .088 .002 22.28 0.03 2.24 0.05
119 .940 .001 .088 .002 23.88 0.03 2.24 0.05
120 1.002 .001 .088 .002 25.45 0.03 2.24 0.05
121 1.065 .002 .088 .002 27.05 0.05 2.24 0.05
122 1.127 .002 .088 .002 28.63 0.05 2.24 0.05
123 1.190 .002 .088 .002 30.23 0.05 2.24 0.05
124 1.252 .002 .088 .002 31.80 0.05 2.24 0.05
125 1.315 .002 .088 .002 33.40 0.05 2.24 0.05
126 1.377 .002 .088 .002 34.98 0.05 2.24 0.05
127 1.440 .002 .088 .002 36.58 0.05 2.24 0.05
128 1.502 .002 .088 .002 38.15 0.05 2.24 0.05
129 1.565 .002 .088 .002 39.75 0.05 2.24 0.05
130 1.629 .002 .088 .002 41.38 0.05 2.24 0.05
131 1.691 .002 .088 .002 42.95 0.05 2.24 0.05
132 1.754 .002 .088 .002 44.55 0.05 2.24 0.05
133 1.816 .002 .088 .002 46.13 0.05 2.24 0.05
134 1.879 .002 .088 .002 47.73 0.05 2.24 0.05
135 1.942 .002 .088 .002 49.33 0.05 2.24 0.05
136 2.004 .002 .088 .002 50.90 0.05 2.24 0.05
137 2.067 .002 .088 .002 52.50 0.05 2.24 0.05
138 2.129 .002 .088 .002 54.08 0.05 2.24 0.05
139 2.192 .002 .088 .002 55.68 0.05 2.24 0.05
140 2.254 .002 .088 .002 57.25 0.05 2.24 0.05
141 2.317 .002 .088 .002 58.85 0.05 2.24 0.05
142 2.379 .002 .088 .002 60.43 0.05 2.24 0.05
143 2.442 .002 .088 .002 62.03 0.05 2.24 0.05
144 2.504 .002 .088 .002 63.60 0.05 2.24 0.05
145 2.567 .002 .088 .002 65.20 0.05 2.24 0.05
146 2.629 .002 .088 .002 66.78 0.05 2.24 0.05
147 2.692 .002 .088 .002 68.38 0.05 2.24 0.05
148 2.754 .002 .088 .002 69.95 0.05 2.24 0.05
149 2.817 .002 .088 .002 71.55 0.05 2.24 0.05
150 2.879 .002 .088 .002 73.13 0.05 2.24 0.05
151 3.004 .002 .088 .002 76.30 0.05 2.24 0.05
152 3.254 .002 .088 .002 82.65 0.05 2.24 0.05
153 3.504 .002 .088 .002 89.00 0.05 2.24 0.05
154 3.754 .002 .088 .002 95.35 0.05 2.24 0.05
155 4.004 .002 .088 .002 101.70 0.05 2.24 0.05
156 4.254 .002 .088 .002 108.05 0.05 2.24 0.05
157 4.504 .002 .088 .002 114.40 0.05 2.24 0.05
158 4.754 .002 .088 .002 120.75 0.05 2.24 0.05
159 5.004 .002 .088 .002 127.10 0.05 2.24 0.05
160 5.254 .002 .088 .002 133.45 0.05 2.24 0.05
161 5.504 .002 .088 .002 139.80 0.05 2.24 0.05
162 5.754 .002 .088 .002 146.15 0.05 2.24 0.05
163 6.004 .002 .088 .002 152.50 0.05 2.24 0.05
164 6.254 .002 .088 .002 158.85 0.05 2.24 0.05
165 6.504 .002 .088 .002 165.20 0.05 2.24 0.05
166 6.754 .002 .088 .002 171.55 0.05 2.24 0.05
167 7.004 .002 .088 .002 177.90 0.05 2.24 0.05
168 7.254 .002 .088 .002 184.25 0.05 2.24 0.05
169 7.504 .002 .088 .002 190.60 0.05 2.24 0.05
170 7.754 .002 .088 .002 196.95 0.05 2.24 0.05
171 8.004 .002 .088 .002 203.30 0.05 2.24 0.05
172 8.254 .002 .088 .002 209.65 0.05 2.24 0.05
173 8.504 .002 .088 .002 216.00 0.05 2.24 0.05
174 8.754 .002 .088 .002 222.35 0.05 2.24 0.05
175 9.004 .002 .088 .002 228.70 0.05 2.24 0.05
176 9.254 .002 .088 .002 235.05 0.05 2.24 0.05
177 9.504 .002 .088 .002 241.40 0.05 2.24 0.05
178 9.754 .002 .088 .002 247.75 0.05 2.24 0.05

 

1/8″ Solid Back-up

Includes MS27595
Ht= .050″ ±.002 (1.27mm ±0.05)

Size Reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
201 .191 .001 .119 .001 4.85 0.03 3.02 0.03
202 .253 .001 .119 .001 6.43 0.03 3.02 0.03
203 .316 .001 .119 .001 8.03 0.03 3.02 0.03
204 .378 .001 .119 .001 9.60 0.03 3.02 0.03
205 .441 .001 .119 .001 11.20 0.03 3.02 0.03
206 .503 .001 .119 .001 12.78 0.03 3.02 0.03
207 .566 .001 .119 .001 14.38 0.03 3.02 0.03
208 .628 .001 .119 .001 15.95 0.03 3.02 0.03
209 .691 .001 .119 .001 17.55 0.03 3.02 0.03
210 .753 .001 .119 .001 19.13 0.03 3.02 0.03
211 .815 .001 .119 .001 20.70 0.03 3.02 0.03
212 .878 .001 .119 .001 22.30 0.03 3.02 0.03
213 .940 .001 .119 .001 23.88 0.03 3.02 0.03
214 1.003 .002 .119 .001 25.48 0.05 3.02 0.03
215 1.065 .002 .119 .001 27.05 0.05 3.02 0.03
216 1.128 .002 .119 .001 28.65 0.05 3.02 0.03
217 1.190 .002 .119 .001 30.23 0.05 3.02 0.03
218 1.253 .002 .119 .001 31.83 0.05 3.02 0.03
219 1.315 .002 .119 .001 33.40 0.05 3.02 0.03
220 1.378 .002 .119 .001 35.00 0.05 3.02 0.03
221 1.440 .002 .119 .001 36.58 0.05 3.02 0.03
222 1.503 .002 .119 .001 38.18 0.05 3.02 0.03
223 1.629 .002 .119 .001 41.38 0.05 3.02 0.03
224 1.754 .002 .119 .001 44.55 0.05 3.02 0.03
225 1.880 .002 .119 .001 47.75 0.05 3.02 0.03
226 2.005 .002 .119 .001 50.93 0.05 3.02 0.03
227 2.130 .002 .119 .001 54.10 0.05 3.02 0.03
228 2.255 .002 .119 .001 57.28 0.05 3.02 0.03
229 2.380 .002 .119 .001 60.45 0.05 3.02 0.03
230 2.505 .002 .119 .001 63.63 0.05 3.02 0.03
231 2.630 .002 .119 .001 66.80 0.05 3.02 0.03
232 2.755 .002 .119 .001 69.98 0.05 3.02 0.03
233 2.880 .002 .119 .001 73.15 0.05 3.02 0.03
234 3.005 .002 .119 .001 76.33 0.05 3.02 0.03
235 3.130 .002 .119 .001 79.50 0.05 3.02 0.03
236 3.255 .002 .119 .001 82.68 0.05 3.02 0.03
237 3.380 .002 .119 .001 85.85 0.05 3.02 0.03
238 3.505 .002 .119 .001 89.03 0.05 3.02 0.03
239 3.630 .002 .119 .001 92.20 0.05 3.02 0.03
240 3.755 .002 .119 .001 95.38 0.05 3.02 0.03
241 3.880 .002 .119 .001 98.55 0.05 3.02 0.03
242 4.005 .002 .119 .001 101.73 0.05 3.02 0.03
243 4.130 .002 .119 .001 104.90 0.05 3.02 0.03
244 4.255 .002 .119 .001 108.08 0.05 3.02 0.03
245 4.380 .002 .119 .001 111.25 0.05 3.02 0.03
246 4.505 .002 .119 .001 114.43 0.05 3.02 0.03
247 4.630 .002 .119 .001 117.60 0.05 3.02 0.03
248 4.755 .002 .119 .001 120.78 0.05 3.02 0.03
249 4.880 .002 .119 .001 123.95 0.05 3.02 0.03
250 5.005 .002 .119 .001 127.13 0.05 3.02 0.03
251 5.130 .002 .119 .001 130.30 0.05 3.02 0.03
252 5.255 .002 .119 .001 133.48 0.05 3.02 0.03
253 5.380 .002 .119 .001 136.65 0.05 3.02 0.03
254 5.505 .002 .119 .001 139.83 0.05 3.02 0.03
255 5.630 .002 .119 .001 143.00 0.05 3.02 0.03
256 5.755 .002 .119 .001 146.18 0.05 3.02 0.03
257 5.880 .002 .119 .001 149.35 0.05 3.02 0.03
258 6.005 .002 .119 .001 152.53 0.05 3.02 0.03
259 6.255 .002 .119 .001 158.88 0.05 3.02 0.03
260 6.505 .002 .119 .001 165.23 0.05 3.02 0.03
261 6.755 .002 .119 .001 171.58 0.05 3.02 0.03
262 7.005 .002 .119 .001 177.93 0.05 3.02 0.03
263 7.255 .002 .119 .001 184.28 0.05 3.02 0.03
264 7.505 .002 .119 .001 190.63 0.05 3.02 0.03
265 7.755 .002 .119 .001 196.98 0.05 3.02 0.03
266 8.005 .002 .119 .001 203.33 0.05 3.02 0.03
267 8.255 .002 .119 .001 209.68 0.05 3.02 0.03
268 8.505 .002 .119 .001 216.03 0.05 3.02 0.03
269 8.755 .002 .119 .001 222.38 0.05 3.02 0.03
270 9.005 .003 .119 .001 228.73 0.08 3.02 0.03
271 9.255 .003 .119 .001 235.08 0.08 3.02 0.03
272 9.505 .003 .119 .001 241.43 0.08 3.02 0.03
273 9.755 .003 .119 .001 247.78 0.08 3.02 0.03
274 10.005 .003 .119 .001 254.13 0.08 3.02 0.03
275 10.505 .003 .119 .001 266.83 0.08 3.02 0.03
276 11.005 .003 .119 .001 279.53 0.08 3.02 0.03
277 11.505 .003 .119 .001 292.23 0.08 3.02 0.03
278 12.005 .003 .119 .001 304.93 0.08 3.02 0.03
279 13.005 .003 .119 .001 330.33 0.08 3.02 0.03
280 14.005 .003 .119 .001 355.73 0.08 3.02 0.03
281 15.005 .003 .119 .001 381.13 0.08 3.02 0.03
282 16.005 .003 .119 .001 406.53 0.08 3.02 0.03
283 17.005 .003 .119 .001 431.93 0.08 3.02 0.03
284 18.005 .003 .119 .001 457.33 0.08 3.02 0.03

 

3/16″ Solid Back-up

Includes MS27595
Ht= .073″ ±.002 (1.85mm ±0.05)

Size Reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
309 .435 .002 .185 .001 11.05 0.05 4.70 0.05
310 .497 .002 .185 .001 12.62 0.05 4.70 0.05
311 .560 .002 .185 .001 14.22 0.05 4.70 0.05
312 .622 .002 .185 .001 15.80 0.05 4.70 0.05
313 .685 .002 .185 .001 17.40 0.05 4.70 0.05
314 .747 .002 .185 .001 18.97 0.05 4.70 0.05
315 .810 .002 .185 .001 20.57 0.05 4.70 0.05
316 .872 .002 .185 .001 22.15 0.05 4.70 0.05
317 .935 .002 .185 .001 23.75 0.05 4.70 0.05
318 .997 .002 .185 .001 25.32 0.05 4.70 0.05
319 1.060 .002 .185 .001 26.92 0.05 4.70 0.05
320 1.122 .002 .185 .001 28.50 0.05 4.70 0.05
321 1.185 .002 .185 .001 30.10 0.05 4.70 0.05
322 1.247 .002 .185 .001 31.67 0.05 4.70 0.05
323 1.310 .002 .185 .001 33.27 0.05 4.70 0.05
324 1.372 .002 .185 .001 34.85 0.05 4.70 0.05
325 1.497 .002 .185 .001 38.02 0.05 4.70 0.05
326 1.622 .002 .185 .001 41.20 0.05 4.70 0.05
327 1.748 .002 .185 .001 44.40 0.05 4.70 0.05
328 1.873 .002 .185 .001 47.57 0.05 4.70 0.05
329 1.998 .002 .185 .001 50.75 0.05 4.70 0.05
330 2.123 .002 .185 .001 53.92 0.05 4.70 0.05
331 2.248 .002 .185 .001 57.10 0.05 4.70 0.05
332 2.373 .002 .185 .001 60.27 0.05 4.70 0.05
333 2.498 .002 .185 .001 63.45 0.05 4.70 0.05
334 2.623 .002 .185 .001 66.62 0.05 4.70 0.05
335 2.748 .002 .185 .001 69.80 0.05 4.70 0.05
336 2.873 .002 .185 .001 72.97 0.05 4.70 0.05
337 2.998 .002 .185 .001 76.15 0.05 4.70 0.05
338 3.123 .002 .185 .001 79.32 0.05 4.70 0.05
339 3.248 .002 .185 .001 82.50 0.05 4.70 0.05
340 3.373 .002 .185 .001 85.67 0.05 4.70 0.05
341 3.498 .002 .185 .001 88.85 0.05 4.70 0.05
342 3.623 .002 .185 .001 92.02 0.05 4.70 0.05
343 3.748 .002 .185 .001 95.20 0.05 4.70 0.05
344 3.873 .002 .185 .001 98.37 0.05 4.70 0.05
345 3.998 .002 .185 .001 101.55 0.05 4.70 0.05
346 4.123 .002 .185 .001 104.72 0.05 4.70 0.05
347 4.248 .002 .185 .001 107.90 0.05 4.70 0.05
348 4.373 .002 .185 .001 111.07 0.05 4.70 0.05
349 4.498 .002 .185 .001 114.25 0.05 4.70 0.05
350 4.623 .002 .185 .001 117.42 0.05 4.70 0.05
351 4.748 .002 .185 .001 120.60 0.05 4.70 0.05
352 4.873 .002 .185 .001 123.77 0.05 4.70 0.05
353 4.998 .002 .185 .001 126.95 0.05 4.70 0.05
354 5.123 .002 .185 .001 130.12 0.05 4.70 0.05
355 5.248 .002 .185 .001 133.30 0.05 4.70 0.05
356 5.373 .002 .185 .001 136.47 0.05 4.70 0.05
357 5.498 .002 .185 .001 139.65 0.05 4.70 0.05
358 5.623 .002 .185 .001 142.82 0.05 4.70 0.05
359 5.748 .002 .185 .001 146.00 0.05 4.70 0.05
360 5.873 .002 .185 .001 149.17 0.05 4.70 0.05
361 5.998 .002 .185 .001 152.35 0.05 4.70 0.05
362 6.248 .002 .185 .001 158.70 0.05 4.70 0.05
363 6.498 .002 .185 .001 165.05 0.05 4.70 0.05
364 6.748 .002 .185 .001 171.40 0.05 4.70 0.05
365 6.998 .002 .185 .001 177.75 0.05 4.70 0.05
366 7.248 .002 .185 .001 184.10 0.05 4.70 0.05
367 7.498 .002 .185 .001 190.45 0.05 4.70 0.05
368 7.748 .002 .185 .001 196.80 0.05 4.70 0.05
369 7.998 .002 .185 .001 203.15 0.05 4.70 0.05
370 8.249 .002 .185 .001 209.52 0.05 4.70 0.05
371 8.499 .002 .185 .001 215.87 0.05 4.70 0.05
372 8.749 .002 .185 .001 222.22 0.05 4.70 0.05
373 8.999 .002 .185 .001 228.57 0.05 4.70 0.05
374 9.249 .003 .185 .001 234.92 0.08 4.70 0.05
375 9.499 .003 .185 .001 241.27 0.08 4.70 0.05
376 9.749 .003 .185 .001 247.62 0.08 4.70 0.05
377 9.999 .003 .185 .001 253.97 0.08 4.70 0.05
378 10.499 .003 .185 .001 266.67 0.08 4.70 0.05
379 11.999 .003 .185 .001 304.77 0.08 4.70 0.05
380 11.499 .003 .185 .001 292.07 0.08 4.70 0.05
381 11.999 .004 .185 .001 304.77 0.08 4.70 0.05
382 12.999 .004 .185 .001 330.17 0.08 4.70 0.05
383 13.999 .004 .185 .001 355.57 0.08 4.70 0.05
384 14.999 .004 .185 .001 380.97 0.08 4.70 0.05
385 15.999 .004 .185 .001 406.37 0.08 4.70 0.05
386 16.999 .004 .185 .001 431.77 0.08 4.70 0.05
387 17.999 .004 .185 .001 457.17 0.08 4.70 0.05
388 18.999 .004 .185 .001 482.57 0.08 4.70 0.05
389 19.999 .004 .185 .001 507.97 0.08 4.70 0.05
390 20.999 .005 .185 .001 533.37 0.10 4.70 0.05
391 21.999 .005 .185 .001 558.77 0.10 4.70 0.05
392 22.999 .005 .185 .001 584.17 0.10 4.70 0.05
393 23.999 .005 .185 .001 609.57 0.10 4.70 0.05
394 24.999 .005 .185 .001 634.97 0.10 4.70 0.05
395 25.999 .005 .185 .001 660.37 0.10 4.70 0.05

 

1/4″ Solid Back-up

Includes MS27595
Ht= .108″ ±.002 (2.74mm ±0.05)

Size Reference ID (inch) ± W (inch) ± ID (mm) ± W (mm) ±
425 4.502 .002 .236 .001 114.35 0.05 5.99 0.03
426 4.627 .002 .236 .001 117.53 0.05 5.99 0.03
427 4.752 .002 .236 .001 120.70 0.05 5.99 0.03
428 4.877 .002 .236 .001 123.88 0.05 5.99 0.03
429 5.002 .002 .236 .001 127.05 0.05 5.99 0.03
430 5.127 .002 .236 .001 130.23 0.05 5.99 0.03
431 5.252 .002 .236 .001 133.40 0.05 5.99 0.03
432 5.377 .002 .236 .001 136.58 0.05 5.99 0.03
433 5.502 .002 .236 .001 139.75 0.05 5.99 0.03
434 5.627 .002 .236 .001 142.93 0.05 5.99 0.03
435 5.752 .002 .236 .001 146.10 0.05 5.99 0.03
436 5.877 .002 .236 .001 149.28 0.05 5.99 0.03
437 6.002 .002 .236 .001 152.45 0.05 5.99 0.03
438 6.252 .002 .236 .001 158.80 0.05 5.99 0.03
439 6.502 .002 .236 .001 165.15 0.05 5.99 0.03
440 6.752 .002 .236 .001 171.50 0.05 5.99 0.03
441 7.002 .002 .236 .001 177.85 0.05 5.99 0.03
442 7.252 .002 .236 .001 184.20 0.05 5.99 0.03
443 7.502 .002 .236 .001 190.55 0.05 5.99 0.03
444 7.752 .002 .236 .001 196.90 0.05 5.99 0.03
445 8.002 .002 .236 .001 203.25 0.05 5.99 0.03
446 8.502 .003 .236 .001 215.95 0.08 5.99 0.03
447 9.002 .003 .236 .001 228.65 0.08 5.99 0.03
448 9.502 .003 .236 .001 241.35 0.08 5.99 0.03
449 10.002 .003 .236 .001 254.05 0.08 5.99 0.03
450 10.502 .003 .236 .001 266.75 0.08 5.99 0.03
451 11.002 .004 .236 .001 279.45 0.10 5.99 0.03
452 11.502 .004 .236 .001 292.15 0.10 5.99 0.03
453 12.002 .004 .236 .001 304.85 0.10 5.99 0.03
454 12.502 .004 .236 .001 317.55 0.10 5.99 0.03
455 13.002 .004 .236 .001 330.25 0.10 5.99 0.03
456 13.502 .005 .236 .001 342.95 0.13 5.99 0.03
457 14.002 .005 .236 .001 355.65 0.13 5.99 0.03
458 14.502 .005 .236 .001 368.35 0.13 5.99 0.03
459 15.002 .005 .236 .001 381.05 0.13 5.99 0.03
460 15.502 .005 .236 .001 393.75 0.13 5.99 0.03
461 16.002 .006 .236 .001 406.45 0.15 5.99 0.03
462 16.502 .006 .236 .001 419.15 0.15 5.99 0.03
463 17.002 .006 .236 .001 431.85 0.15 5.99 0.03
464 17.502 .006 .236 .001 444.55 0.15 5.99 0.03
465 18.002 .006 .236 .001 457.25 0.15 5.99 0.03
466 18.502 .007 .236 .001 469.95 0.18 5.99 0.03
467 19.002 .007 .236 .001 482.65 0.18 5.99 0.03
468 19.502 .007 .236 .001 495.35 0.18 5.99 0.03
469 20.002 .007 .236 .001 508.05 0.18 5.99 0.03
470 21.002 .007 .236 .001 533.45 0.18 5.99 0.03
471 22.002 .008 .236 .001 558.85 0.20 5.99 0.03
472 23.002 .008 .236 .001 584.25 0.20 5.99 0.03
473 24.002 .008 .236 .001 609.65 0.20 5.99 0.03
474 25.002 .008 .236 .001 635.05 0.20 5.99 0.03
475 26.002 .008 .236 .001 660.45 0.20 5.99 0.03

 

Metric Solid Back-up Sizes

 

JIS B2407 P Series Metric Back-up

Size Reference ID ± OD Ht ±
P3 3.00 ±0.30 6.00 1.25 ±0.10
P4 4.00 ±0.30 7.00 1.25 ±0.10
P5 5.00 ±0.30 8.00 1.25 ±0.10
P6 6.00 ±0.30 9.00 1.25 ±0.10
P7 7.00 ±0.30 10.00 1.25 ±0.10
P8 8.00 ±0.30 11.00 1.25 ±0.10
P9 9.00 ±0.30 12.00 1.25 ±0.10
P10 10.00 ±0.30 13.00 1.25 ±0.10
P10A 10.00 ±0.30 13.00 1.25 ±0.10
P11 11.00 ±0.30 15.00 1.25 ±0.10
P11.2 11.20 ±0.30 15.20 1.25 ±0.10
P12 12.00 ±0.30 16.00 1.25 ±0.10
P12.5 12.50 ±0.30 16.50 1.25 ±0.10
P14 14.00 ±0.30 18.00 1.25 ±0.10
P15 15.00 ±0.30 19.00 1.25 ±0.10
P16 16.00 ±0.30 20.00 1.25 ±0.10
P18 18.00 ±0.30 22.00 1.25 ±0.10
P20 20.00 ±0.30 24.00 1.25 ±0.10
P21 21.00 ±0.30 25.00 1.25 ±0.10
P22 22.00 ±0.30 26.00 1.25 ±0.10
P22A 22.00 ±0.40 28.00 1.25 ±0.10
P22.4 22.40 ±0.40 28.40 1.25 ±0.10
P24 24.00 ±0.40 30.00 1.25 ±0.10
P25 25.00 ±0.40 31.00 1.25 ±0.10
P25.5 25.50 ±0.40 31.50 1.25 ±0.10
P26 26.00 ±0.40 32.00 1.25 ±0.10
P28 28.00 ±0.40 34.00 1.25 ±0.10
P29 29.00 ±0.40 35.00 1.25 ±0.10
P29.5 29.50 ±0.40 35.50 1.25 ±0.10
P30 30.00 ±0.40 36.00 1.25 ±0.10
P31 31.00 ±0.40 37.00 1.25 ±0.10
P31.5 31.50 ±0.40 37.50 1.25 ±0.10
P32 32.00 ±0.40 38.00 1.25 ±0.10
P34 34.00 ±0.40 40.00 1.25 ±0.10
P35 35.00 ±0.40 41.00 1.25 ±0.10
P35.5 35.50 ±0.40 41.50 1.25 ±0.10
P36 36.00 ±0.40 42.00 1.25 ±0.10
P38 38.00 ±0.40 44.00 1.25 ±0.10
P40 40.00 ±0.40 46.00 1.25 ±0.10
P41 41.00 ±0.40 47.00 1.25 ±0.10
P42 42.00 ±0.40 48.00 1.25 ±0.10
P44 44.00 ±0.40 50.00 1.25 ±0.10
P45 45.00 ±0.40 51.00 1.25 ±0.10
P46 46.00 ±0.40 52.00 1.25 ±0.10
P48 48.00 ±0.40 54.00 1.25 ±0.10
P48A 48.00 ±0.50 58.00 1.90 ±0.13
P49 49.00 ±0.40 55.00 1.25 ±0.10
P50 50.00 ±0.40 56.00 1.25 ±0.10
P50A 50.00 ±0.50 60.00 1.90 ±0.13
P52 52.00 ±0.50 62.00 1.90 ±0.13
P53 53.00 ±0.50 63.00 1.90 ±0.13
P55 55.00 ±0.50 65.00 1.90 ±0.13
P56 56.00 ±0.50 66.00 1.90 ±0.13
P58 58.00 ±0.50 68.00 1.90 ±0.13
P60 60.00 ±0.50 70.00 1.90 ±0.13
P62 62.00 ±0.50 72.00 1.90 ±0.13
P63 63.00 ±0.50 73.00 1.90 ±0.13
P65 65.00 ±0.50 75.00 1.90 ±0.13
P67 67.00 ±0.50 77.00 1.90 ±0.13
P70 70.00 ±0.50 80.00 1.90 ±0.13
P71 71.00 ±0.50 81.00 1.90 ±0.13
P75 75.00 ±0.50 85.00 1.90 ±0.13
P80 80.00 ±0.50 90.00 1.90 ±0.13
P85 85.00 ±0.50 95.00 1.90 ±0.13
P86 86.00 ±0.50 96.00 1.90 ±0.13
P90 90.00 ±0.50 100.00 1.90 ±0.13
P95 95.00 ±0.50 105.00 1.90 ±0.13
P100 100.00 ±0.50 110.00 1.90 ±0.13
P102 102.00 ±0.50 112.00 1.90 ±0.13
P105 105.00 ±0.50 115.00 1.90 ±0.13
P110 110.00 ±0.50 120.00 1.90 ±0.13
P111 111.00 ±0.50 121.00 1.90 ±0.13
P112 112.00 ±0.50 122.00 1.90 ±0.13
P115 115.00 ±0.50 125.00 1.90 ±0.13
P120 120.00 ±0.50 130.00 1.90 ±0.13
P125 125.00 ±0.50 135.00 1.90 ±0.13
P130 130.00 ±0.50 140.00 1.90 ±0.13
P132 132.00 ±0.50 142.00 1.90 ±0.13
P135 135.00 ±0.50 145.00 1.90 ±0.13
P140 140.00 ±0.50 150.00 1.90 ±0.13
P145 145.00 ±0.50 155.00 1.90 ±0.13
P150 150.00 ±0.50 160.00 1.90 ±0.13
P150A 150.00 ±0.60 165.00 2.75 ±0.15
P155 155.00 ±0.60 170.00 2.75 ±0.15
P160 160.00 ±0.60 175.00 2.75 ±0.15
P165 165.00 ±0.60 175.00 2.75 ±0.15
P170 170.00 ±0.60 185.00 2.75 ±0.15
P175 175.00 ±0.60 190.00 2.75 ±0.15
P180 180.00 ±0.60 195.00 2.75 ±0.15
P185 185.00 ±0.60 200.00 2.75 ±0.15
P190 190.00 ±0.60 205.00 2.75 ±0.15
P195 195.00 ±0.60 210.00 2.75 ±0.15
P200 200.00 ±0.60 215.00 2.75 ±0.15
P205 205.00 ±0.60 220.00 2.75 ±0.15
P209 209.00 ±0.60 224.00 2.75 ±0.15
P210 210.00 ±0.60 225.00 2.75 ±0.15
P215 215.00 ±0.60 230.00 2.75 ±0.15
P220 220.00 ±0.60 235.00 2.75 ±0.15
P225 225.00 ±0.60 240.00 2.75 ±0.15
P230 230.00 ±0.60 245.00 2.75 ±0.15
P235 235.00 ±0.60 250.00 2.75 ±0.15
P240 240.00 ±0.60 255.00 2.75 ±0.15
P245 245.00 ±0.60 260.00 2.75 ±0.15
P250 250.00 ±0.60 265.00 2.75 ±0.15
P255 255.00 ±0.60 270.00 2.75 ±0.15
P260 260.00 ±0.60 275.00 2.75 ±0.15
P265 265.00 ±0.60 280.00 2.75 ±0.15
P270 270.00 ±0.60 285.00 2.75 ±0.15
P275 275.00 ±0.60 290.00 2.75 ±0.15
P280 280.00 ±0.60 295.00 2.75 ±0.15
P285 285.00 ±0.60 300.00 2.75 ±0.15
P290 290.00 ±0.60 305.00 2.75 ±0.15
P295 295.00 ±0.60 310.00 2.75 ±0.15
P300 300.00 ±0.60 315.00 2.75 ±0.15
P315 315.00 ±0.60 330.00 2.75 ±0.15
P320 320.00 ±0.60 335.00 2.75 ±0.15
P335 335.00 ±0.60 350.00 2.75 ±0.15
P360 360.00 ±0.60 375.00 2.75 ±0.15
P375 375.00 ±0.60 380.00 2.75 ±0.15
P385 385.00 ±0.60 400.00 2.75 ±0.15
P400 400.00 ±0.60 415.00 2.75 ±0.15

 

JIS B2407 G Series Metric Back-up

Size Reference ID ± OD Ht ±
G25 25.00 ±0.40 30.00 1.25 ±0.10
G30 30.00 ±0.40 35.00 1.25 ±0.10
G35 35.00 ±0.40 40.00 1.25 ±0.10
G40 40.00 ±0.40 45.00 1.25 ±0.10
G45 45.00 ±0.40 50.00 1.25 ±0.10
G50 50.00 ±0.40 55.00 1.25 ±0.10
G55 55.00 ±0.50 60.00 1.25 ±0.10
G60 60.00 ±0.50 75.00 1.25 ±0.10
G65 65.00 ±0.50 70.00 1.25 ±0.10
G70 70.00 ±0.50 75.00 1.25 ±0.10
G75 75.00 ±0.50 80.00 1.25 ±0.10
G80 80.00 ±0.50 85.00 1.25 ±0.10
G85 85.00 ±0.50 90.00 1.25 ±0.10
G90 90.00 ±0.50 95.00 1.25 ±0.10
G95 95.00 ±0.50 100.00 1.25 ±0.10
G100 100.00 ±0.50 105.00 1.25 ±0.10
G105 105.00 ±0.50 110.00 1.25 ±0.10
G110 110.00 ±0.50 115.00 1.25 ±0.10
G115 115.00 ±0.50 120.00 1.25 ±0.10
G120 120.00 ±0.50 125.00 1.25 ±0.10
G125 125.00 ±0.50 130.00 1.25 ±0.10
G130 130.00 ±0.50 135.00 1.25 ±0.10
G135 135.00 ±0.50 140.00 1.25 ±0.10
G140 140.00 ±0.50 145.00 1.25 ±0.10
G145 145.00 ±0.50 150.00 1.25 ±0.10
G150 150.00 ±0.50 160.00 1.25 ±0.10
G155 155.00 ±0.50 165.00 1.25 ±0.10
G160 160.00 ±0.50 170.00 1.25 ±0.10
G165 165.00 ±0.50 175.00 1.25 ±0.10
G170 170.00 ±0.50 180.00 1.25 ±0.10
G175 175.00 ±0.50 185.00 1.25 ±0.10
G180 180.00 ±0.50 190.00 1.25 ±0.10
G185 185.00 ±0.50 195.00 1.25 ±0.10
G190 190.00 ±0.50 200.00 1.25 ±0.10
G195 195.00 ±0.50 205.00 1.25 ±0.10
G200 200.00 ±0.60 210.00 1.90 ±0.13
G210 210.00 ±0.60 220.00 1.90 ±0.13
G220 220.00 ±0.60 230.00 1.90 ±0.13
G230 230.00 ±0.60 240.00 1.90 ±0.13
G240 240.00 ±0.60 250.00 1.90 ±0.13
G250 250.00 ±0.60 260.00 1.90 ±0.13
G260 260.00 ±0.60 270.00 1.90 ±0.13
G270 270.00 ±0.60 280.00 1.90 ±0.13
G280 280.00 ±0.60 290.00 1.90 ±0.13
G290 290.00 ±0.60 300.00 1.90 ±0.13
G300 300.00 ±0.60 310.00 1.90 ±0.13