• BS O-Rings
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
186252 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 4.475 in113.67 mm N/A 0.005 in0.13 mm N/A -349 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186466 		N/A BS Standard O-Ring N/A Silicone N/A 0.070 in1.78 mm N/A 70 N/A 2.239 in56.87 mm N/A 0.003 in0.08 mm N/A -035 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186251 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 4.600 in116.84 mm N/A 0.005 in0.13 mm N/A -350 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186250 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 4.725 in120.02 mm N/A 0.005 in0.13 mm N/A -351 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186249 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 4.850 in123.19 mm N/A 0.005 in0.13 mm N/A -352 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186248 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 4.975 in126.37 mm N/A 0.005 in0.13 mm N/A -353 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186247 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.100 in129.54 mm N/A 0.005 in0.13 mm N/A -354 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186246 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.225 in132.72 mm N/A 0.005 in0.13 mm N/A -355 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186245 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.350 in135.89 mm N/A 0.005 in0.13 mm N/A -356 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186244 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.475 in139.07 mm N/A 0.005 in0.13 mm N/A -357 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186243 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.600 in142.24 mm N/A 0.005 in0.13 mm N/A -358 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186242 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.725 in145.42 mm N/A 0.005 in0.13 mm N/A -359 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186465 		N/A BS Standard O-Ring N/A Silicone N/A 0.070 in1.78 mm N/A 70 N/A 2.364 in60.05 mm N/A 0.003 in0.08 mm N/A -036 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186241 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.850 in148.59 mm N/A 0.005 in0.13 mm N/A -360 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186240 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 5.975 in151.77 mm N/A 0.005 in0.13 mm N/A -361 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186239 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 6.225 in158.12 mm N/A 0.005 in0.13 mm N/A -362 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186238 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 6.475 in164.47 mm N/A 0.005 in0.13 mm N/A -363 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186237 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 6.725 in170.82 mm N/A 0.005 in0.13 mm N/A -364 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186236 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 6.975 in177.17 mm N/A 0.005 in0.13 mm N/A -365 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186235 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 7.225 in183.52 mm N/A 0.005 in0.13 mm N/A -366 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186234 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 7.475 in189.87 mm N/A 0.005 in0.13 mm N/A -367 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186233 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 7.725 in196.22 mm N/A 0.005 in0.13 mm N/A -368 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186232 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 7.975 in202.57 mm N/A 0.005 in0.13 mm N/A -369 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186464 		N/A BS Standard O-Ring N/A Silicone N/A 0.070 in1.78 mm N/A 70 N/A 2.489 in63.22 mm N/A 0.003 in0.08 mm N/A -037 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186231 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 8.225 in208.92 mm N/A 0.005 in0.13 mm N/A -370 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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