British Standard O-Rings are very similar to Standard O-Rings in the fact that they are both standardized imperically. The British Standard however, incorporates some extended sizes in the 1/4" nominal cross section group for an even broader application range. British Standard O-Rings serve a variety of industries including aerospace, paint, food, and chemical transport.

This elastomer possesses mechanical properties similar to Viton®, with the exception of its slightly lower compression set resistance. It is more suitable for sensitive applications where lighter compressive forces are applied to energize the seal. This core has a Shore A hardness of 70 but it also offers a broader operating temperature range of -80°F to +500°F. (-62°C to +260°C). For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
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O-Ring Industries

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N/A
186261
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 3.350 in85.09 mm N/A 0.005 in0.13 mm N/A -340 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186262
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 3.225 in81.92 mm N/A 0.005 in0.13 mm N/A -339 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186263
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 3.100 in78.74 mm N/A 0.005 in0.13 mm N/A -338 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186264
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.975 in75.57 mm N/A 0.005 in0.13 mm N/A -337 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186265
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.850 in72.39 mm N/A 0.005 in0.13 mm N/A -336 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186266
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.725 in69.22 mm N/A 0.005 in0.13 mm N/A -335 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186267
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.600 in66.04 mm N/A 0.005 in0.13 mm N/A -334 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186268
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.475 in62.87 mm N/A 0.005 in0.13 mm N/A -333 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186269
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.350 in59.69 mm N/A 0.005 in0.13 mm N/A -332 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186270
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.225 in56.52 mm N/A 0.005 in0.13 mm N/A -331 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186271
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 2.100 in53.34 mm N/A 0.005 in0.13 mm N/A -330 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186272
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.975 in50.17 mm N/A 0.005 in0.13 mm N/A -329 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186273
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.850 in46.99 mm N/A 0.005 in0.13 mm N/A -328 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186274
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.725 in43.82 mm N/A 0.005 in0.13 mm N/A -327 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186275
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.600 in40.64 mm N/A 0.005 in0.13 mm N/A -326 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186276
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.475 in37.47 mm N/A 0.005 in0.13 mm N/A -325 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186277
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.350 in34.29 mm N/A 0.005 in0.13 mm N/A -324 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186278
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.287 in32.69 mm N/A 0.005 in0.13 mm N/A -323 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186279
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.225 in31.12 mm N/A 0.005 in0.13 mm N/A -322 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186280
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.162 in29.51 mm N/A 0.005 in0.13 mm N/A -321 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186281
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.100 in27.94 mm N/A 0.005 in0.13 mm N/A -320 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186282
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 1.037 in26.34 mm N/A 0.005 in0.13 mm N/A -319 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186283
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 0.975 in24.77 mm N/A 0.005 in0.13 mm N/A -318 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186284
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 0.912 in23.16 mm N/A 0.005 in0.13 mm N/A -317 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186285
N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 0.850 in21.59 mm N/A 0.005 in0.13 mm N/A -316 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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