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 |
---|---|---|---|---|---|---|---|---|---|---|
BS321 S-70 |
IntegrationID
N/A 186280 |
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 1.162 in29.51 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -321 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS320 S-70 |
IntegrationID
N/A 186281 |
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 1.100 in27.94 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -320 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS319 S-70 |
IntegrationID
N/A 186282 |
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 1.037 in26.34 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -319 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS318 S-70 |
IntegrationID
N/A 186283 |
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 0.975 in24.77 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -318 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS317 S-70 |
IntegrationID
N/A 186284 |
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 0.912 in23.16 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -317 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS316 S-70 |
IntegrationID
N/A 186285 |
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 0.850 in21.59 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -316 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS315 S-70 |
IntegrationID
N/A 186286 |
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 0.787 in19.99 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -315 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS314 S-70 |
IntegrationID
N/A 186287 |
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 0.725 in18.42 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -314 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS313 S-70 |
IntegrationID
N/A 186288 |
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 0.662 in16.81 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -313 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS312 S-70 |
IntegrationID
N/A 186289 |
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 0.600 in15.24 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -312 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS311 S-70 |
IntegrationID
N/A 186290 |
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 0.537 in13.64 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -311 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS310 S-70 |
IntegrationID
N/A 186291 |
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 0.475 in12.07 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -310 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS309 S-70 |
IntegrationID
N/A 186292 |
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 0.412 in10.46 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -309 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS475 S-70 |
IntegrationID
N/A 186155 |
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 25.9401 in658.88 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -475 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS474 S-70 |
IntegrationID
N/A 186156 |
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 24.940 in633.48 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -474 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS473 S-70 |
IntegrationID
N/A 186157 |
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 23.940 in608.08 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -473 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS472 S-70 |
IntegrationID
N/A 186158 |
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 22.940 in582.68 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -472 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS471 S-70 |
IntegrationID
N/A 186159 |
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 21.955 in557.66 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -471 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS470 S-70 |
IntegrationID
N/A 186160 |
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 20.955 in532.26 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -470 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS469 S-70 |
IntegrationID
N/A 186161 |
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 19.955 in506.86 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -469 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS468 S-70 |
IntegrationID
N/A 186162 |
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 19.455 in494.16 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -468 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS467 S-70 |
IntegrationID
N/A 186163 |
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 18.955 in481.46 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -467 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS466 S-70 |
IntegrationID
N/A 186164 |
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 18.455 in468.76 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -466 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS465 S-70 |
IntegrationID
N/A 186165 |
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 17.955 in456.06 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -465 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS464 S-70 |
IntegrationID
N/A 186166 |
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 17.455 in443.36 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -464 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |