BS Silicone O-Rings
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.
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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Cross Section Width (in)
Cross Section Width (mm)
Inside Diameter (in)
Inside Diameter (mm)
Item # |
IntegrationID |
Type |
Material |
Cross Section Width |
Durometer |
Inside Diameter |
CSW Tolerance |
BS Number |
Call for a Quote |
O-Ring Industries |
---|---|---|---|---|---|---|---|---|---|---|
BS336 S-70 |
IntegrationID
N/A 186265 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 2.850 in72.39 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -336 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS844 S-70 |
IntegrationID
N/A 186068 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.813 in71.44 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -844 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS149 S-70 |
IntegrationID
N/A 186403 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.800 in71.12 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -149 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS843 S-70 |
IntegrationID
N/A 186069 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.75 in69.85 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -843 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS39 S-70 |
IntegrationID
N/A 186462 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 2.739 in69.57 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -039 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS148 S-70 |
IntegrationID
N/A 186404 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.737 in69.52 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -148 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS232 S-70 |
IntegrationID
N/A 186342 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.734 in69.44 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -232 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS335 S-70 |
IntegrationID
N/A 186266 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 2.725 in69.22 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -335 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS842 S-70 |
IntegrationID
N/A 186070 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.687 in68.25 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -842 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS147 S-70 |
IntegrationID
N/A 186405 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.675 in67.95 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -147 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS841 S-70 |
IntegrationID
N/A 186071 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.625 in66.68 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -841 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS38 S-70 |
IntegrationID
N/A 186463 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 2.614 in66.40 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -038 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS146 S-70 |
IntegrationID
N/A 186406 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.612 in66.34 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -146 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS231 S-70 |
IntegrationID
N/A 186343 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.609 in66.27 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -231 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS334 S-70 |
IntegrationID
N/A 186267 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 2.600 in66.04 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -334 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS840 S-70 |
IntegrationID
N/A 186072 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.563 in65.1 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -840 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS145 S-70 |
IntegrationID
N/A 186407 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.550 in64.77 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -145 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS839 S-70 |
IntegrationID
N/A 186073 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.500 in63.50 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -839 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS37 S-70 |
IntegrationID
N/A 186464 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 2.489 in63.22 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -037 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS144 S-70 |
IntegrationID
N/A 186408 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.487 in63.17 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -144 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS230 S-70 |
IntegrationID
N/A 186344 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.484 in63.09 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -230 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS333 S-70 |
IntegrationID
N/A 186268 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 2.475 in62.87 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -333 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS838 S-70 |
IntegrationID
N/A 186074 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.437 in61.90 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -838 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS143 S-70 |
IntegrationID
N/A 186409 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.425 in61.60 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -143 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS837 S-70 |
IntegrationID
N/A 186075 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 2.375 in60.33 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -837 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |