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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BS903 S-70 |
IntegrationID
N/A 186045 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.064 in1.63 mm | Durometer N/A 70 | Inside Diameter N/A 0.301 in7.65 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -903 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS902 S-70 |
IntegrationID
N/A 186046 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.064 in1.63 mm | Durometer N/A 70 | Inside Diameter N/A 0.239 in6.07 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -902 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS814 S-70 |
IntegrationID
N/A 186089 |
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 0.937 in23.80 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -814 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS813 S-70 |
IntegrationID
N/A 186090 |
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 0.875 in22.23 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -813 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS812 S-70 |
IntegrationID
N/A 186091 |
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 0.812 in20.62 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -812 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS810 S-70 |
IntegrationID
N/A 186092 |
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 0.687 in17.45 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -810 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS809 S-70 |
IntegrationID
N/A 186093 |
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 0.625 in15.88 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -809 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS807 S-70 |
IntegrationID
N/A 186094 |
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 0.500 in12.70 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -807 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS806 S-70 |
IntegrationID
N/A 186095 |
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 0.437 in11.10 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -806 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS804 S-70 |
IntegrationID
N/A 186096 |
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 0.313 in7.94 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -804 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS803 S-70 |
IntegrationID
N/A 186097 |
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 0.25 in6.35 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -803 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS802 S-70 |
IntegrationID
N/A 186098 |
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 0.187 in4.75 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -802 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS801 S-70 |
IntegrationID
N/A 186099 |
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 0.125 in3.18 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -801 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS643 S-70 |
IntegrationID
N/A 186107 |
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 3.299 in83.79 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -643 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS642 S-70 |
IntegrationID
N/A 186108 |
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 3.174 in80.62 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -642 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS641 S-70 |
IntegrationID
N/A 186109 |
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 3.049 in77.44 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -641 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS640 S-70 |
IntegrationID
N/A 186110 |
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 2.924 in74.27 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -640 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS617 S-70 |
IntegrationID
N/A 186122 |
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 0.703 in17.86 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -617 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS616 S-70 |
IntegrationID
N/A 186123 |
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 0.594 in15.09 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -616 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS615 S-70 |
IntegrationID
N/A 186124 |
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 0.516 in13.11 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -615 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS614 S-70 |
IntegrationID
N/A 186125 |
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 0.469 in11.91 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -614 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS613 S-70 |
IntegrationID
N/A 186126 |
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 0.391 in9.93 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -613 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS611 S-70 |
IntegrationID
N/A 186127 |
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 0.344 in8.74 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -611 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS610 S-70 |
IntegrationID
N/A 186128 |
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 0.266 in6.76 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -610 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
BS607 S-70 |
IntegrationID
N/A 186129 |
Type N/A BS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.040 in1.02 mm | Durometer N/A 70 | Inside Diameter N/A 0.100 in2.54 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -607 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |