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 |
---|---|---|---|---|---|---|---|---|---|---|
BS425 S-70 |
IntegrationID
N/A 186205 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 4.475 in113.67 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -425 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS886 S-70 |
IntegrationID
N/A 186047 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 7.875 in200.03 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -886 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS884 S-70 |
IntegrationID
N/A 186048 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 7.625 in193.68 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -884 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS882 S-70 |
IntegrationID
N/A 186049 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 7.375 in187.33 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -882 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS880 S-70 |
IntegrationID
N/A 186050 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 7.125 in180.98 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -880 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS878 S-70 |
IntegrationID
N/A 186051 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 6.875 in174.63 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -878 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS876 S-70 |
IntegrationID
N/A 186052 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 6.625 in168.28 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -876 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS874 S-70 |
IntegrationID
N/A 186053 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 6.375 in161.93 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -874 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS872 S-70 |
IntegrationID
N/A 186054 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 6.125 in155.58 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -872 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS628 S-70 |
IntegrationID
N/A 186111 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 6.563 in166.70 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -628 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS627 S-70 |
IntegrationID
N/A 186112 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 6.281 in159.54 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -627 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS626 S-70 |
IntegrationID
N/A 186113 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 5.297 in134.54 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -626 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS625 S-70 |
IntegrationID
N/A 186114 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 4.906 in124.61 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -625 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS624 S-70 |
IntegrationID
N/A 186115 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 4.516 in114.71 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -624 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS650 S-70 |
IntegrationID
N/A 186100 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 13.225 in335.92 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -650 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS649 S-70 |
IntegrationID
N/A 186101 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 12.725 in323.22 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -649 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS648 S-70 |
IntegrationID
N/A 186102 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 12.225 in310.52 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -648 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS445A S-70 |
IntegrationID
N/A 186500 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 8.225 in208.92 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -445A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS446A S-70 |
IntegrationID
N/A 186501 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 8.725 in221.62 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -446A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS447A S-70 |
IntegrationID
N/A 186502 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 9.225 in234.32 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -447A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS448A S-70 |
IntegrationID
N/A 186503 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 9.725 in247.02 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -448A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS449A S-70 |
IntegrationID
N/A 186504 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 10.225 in259.72 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -449A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS450A S-70 |
IntegrationID
N/A 186505 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 10.725 in272.42 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -450A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS451A S-70 |
IntegrationID
N/A 186506 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 11.225 in285.12 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -451A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS452A S-70 |
IntegrationID
N/A 186507 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 11.725 in297.82 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -452A | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |