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 |
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BS229 S-70 BS229 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186345 |
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 2.359 in59.92 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -229 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS228 S-70 BS228 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186346 |
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 2.234 in56.74 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -228 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS227 S-70 BS227 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186347 |
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 2.109 in53.57 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -227 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS226 S-70 BS226 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186348 |
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 1.984 in50.39 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -226 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS225 S-70 BS225 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186349 |
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 1.859 in47.22 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -225 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS224 S-70 BS224 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186350 |
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 1.734 in44.04 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -224 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS223 S-70 BS223 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186351 |
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 1.609 in40.87 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -223 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS222 S-70 BS222 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186352 |
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 1.484 in37.69 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -222 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS221 S-70 BS221 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186353 |
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 1.421 in36.09 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -221 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS220 S-70 BS220 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186354 |
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 1.359 in34.52 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -220 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS219 S-70 BS219 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186355 |
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 1.296 in32.92 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -219 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS218 S-70 BS218 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186356 |
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 1.234 in31.34 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -218 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS217 S-70 BS217 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186357 |
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 1.171 in29.74 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -217 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS216 S-70 BS216 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186358 |
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 1.109 in28.17 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -216 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS215 S-70 BS215 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186359 |
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 1.046 in26.57 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -215 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS214 S-70 BS214 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186360 |
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 0.984 in24.99 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -214 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS213 S-70 BS213 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186361 |
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 0.921 in23.39 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -213 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS212 S-70 BS212 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186362 |
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 0.859 in21.82 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -212 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS211 S-70 BS211 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186363 |
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 0.796 in20.22 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -211 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS210 S-70 BS210 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186364 |
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 0.734 in18.64 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -210 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS209 S-70 BS209 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186365 |
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 0.672 in17.07 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -209 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS208 S-70 BS208 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186366 |
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 0.609 in15.47 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -208 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS207 S-70 BS207 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186367 |
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 0.549 in13.94 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -207 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS206 S-70 BS206 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186368 |
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 0.484 in12.29 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -206 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS205 S-70 BS205 S-70/Asset/oring21.jpg |
IntegrationID
N/A 186369 |
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 0.421 in10.69 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -205 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |