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
185398
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 4.984 in126.59 mm N/A 0.004 in0.10 mm N/A -250 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185861
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 4.984 in126.59 mm N/A 0.004 in0.10 mm N/A -250 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.
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
185395
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 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
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
185394
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.484 in139.29 mm N/A 0.004 in0.10 mm N/A -254 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185857
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.484 in139.29 mm N/A 0.004 in0.10 mm N/A -254 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185393
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.609 in142.47 mm N/A 0.004 in0.10 mm N/A -255 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185856
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.609 in142.47 mm N/A 0.004 in0.10 mm N/A -255 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185392
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.734 in145.64 mm N/A 0.004 in0.10 mm N/A -256 N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
185855
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.734 in145.64 mm N/A 0.004 in0.10 mm N/A -256 N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
185391
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.859 in148.82 mm N/A 0.004 in0.10 mm N/A -257 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185854
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.859 in148.82 mm N/A 0.004 in0.10 mm N/A -257 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185390
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 5.984 in151.99 mm N/A 0.004 in0.10 mm N/A -258 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185853
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 5.984 in151.99 mm N/A 0.004 in0.10 mm N/A -258 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185389
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 6.234 in158.34 mm N/A 0.004 in0.10 mm N/A -259 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185852
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 6.234 in158.34 mm N/A 0.004 in0.10 mm N/A -259 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185388
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 6.484 in164.69 mm N/A 0.004 in0.10 mm N/A -260 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185851
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 6.484 in164.69 mm N/A 0.004 in0.10 mm N/A -260 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185387
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 6.734 in171.04 mm N/A 0.004 in0.10 mm N/A -261 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185850
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 90 N/A 6.734 in171.04 mm N/A 0.004 in0.10 mm N/A -261 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
185386
N/A BS Standard O-Ring N/A Viton N/A 0.139 in3.53 mm N/A 75 N/A 6.984 in177.39 mm N/A 0.004 in0.10 mm N/A -262 N/A N/A O-rings are used in the military defense and agriculture industries.
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