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. Viton is also known as: Fluorocarbon and FKM. Viton® is a registered trademarks of DuPont® Dow Elastomers.

A fluoroelastomer compound with a combination of exceptional mechanical properties and compression set resistance. This particular energizer gives an O-ring excellent memory and the ability to recover rapidly from deformation. This core has a Shore A hardness of 75 with a suggested operating temperature range of -10°F to +300°F (-23°C to +150°C) in encapsulated applications. 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
185858
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.359 in136.12 mm N/A 0.004 in0.10 mm N/A -253 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185735
N/A BS Standard O-Ring N/A Viton N/A 0.275 in6.99 mm N/A 90 N/A 5.350 in135.89 mm N/A 0.006 in0.15 mm N/A -432 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185272
N/A BS Standard O-Ring N/A Viton N/A 0.275 in6.99 mm N/A 75 N/A 5.350 in135.89 mm N/A 0.006 in0.15 mm N/A -432 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185319
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 75 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 defense and agriculture industries.
N/A
185782
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 90 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 defense and agriculture industries.
N/A
185680
N/A BS Standard O-Ring N/A Viton N/A 0.070 in1.78 mm N/A 90 N/A 5.345 in135.76 mm N/A 0.003 in0.08 mm N/A -550 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185217
N/A BS Standard O-Ring N/A Viton N/A 0.070 in1.78 mm N/A 75 N/A 5.345 in135.76 mm N/A 0.003 in0.08 mm N/A -550 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185187
N/A BS Standard O-Ring N/A Viton N/A 0.275 in6.99 mm N/A 75 N/A 5.297 in134.54 mm N/A 0.006 in0.15 mm N/A -626 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185650
N/A BS Standard O-Ring N/A Viton N/A 0.275 in6.99 mm N/A 90 N/A 5.297 in134.54 mm N/A 0.006 in0.15 mm N/A -626 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185597
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 90 N/A 5.25 in133.35 mm N/A 0.005 in0.13 mm N/A -865 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185134
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 75 N/A 5.25 in133.35 mm N/A 0.005 in0.13 mm N/A -865 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185525
N/A BS Standard O-Ring N/A Viton N/A 0.070 in1.78 mm N/A 75 N/A 5.239 in133.07 mm N/A 0.003 in0.08 mm N/A -050 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185988
N/A BS Standard O-Ring N/A Viton N/A 0.070 in1.78 mm N/A 90 N/A 5.239 in133.07 mm N/A 0.003 in0.08 mm N/A -050 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185929
N/A BS Standard O-Ring N/A Viton N/A 0.103 in2.62 mm N/A 90 N/A 5.237 in133.02 mm N/A 0.003 in0.08 mm N/A -160 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185466
N/A BS Standard O-Ring N/A Viton N/A 0.103 in2.62 mm N/A 75 N/A 5.237 in133.02 mm N/A 0.003 in0.08 mm N/A -160 N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
185396
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.234 in132.94 mm N/A 0.004 in0.10 mm N/A -252 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185859
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.234 in132.94 mm N/A 0.004 in0.10 mm N/A -252 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185736
N/A BS Standard O-Ring N/A Viton N/A 0.275 in6.99 mm N/A 90 N/A 5.225 in132.72 mm N/A 0.006 in0.15 mm N/A -431 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185273
N/A BS Standard O-Ring N/A Viton N/A 0.275 in6.99 mm N/A 75 N/A 5.225 in132.72 mm N/A 0.006 in0.15 mm N/A -431 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185320
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 75 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 defense and agriculture industries.
N/A
185783
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 90 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 defense and agriculture industries.v
N/A
185598
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 90 N/A 5.125 in130.18 mm N/A 0.005 in0.13 mm N/A -864 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185135
N/A BS Standard O-Ring N/A Viton N/A 0.210 in5.33 mm N/A 75 N/A 5.125 in130.18 mm N/A 0.005 in0.13 mm N/A -864 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185397
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.109 in129.77 mm N/A 0.004 in0.10 mm N/A -251 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185860
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.109 in129.77 mm N/A 0.004 in0.10 mm N/A -251 N/A N/A O-rings are used in the military defense and agriculture industries.
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