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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.
BS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

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O-Ring Industries

Quantity
BS132 S-70 N/A
186420 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.737 in44.12 mm N/A 0.003 in0.08 mm N/A -132 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS131 S-70 N/A
186421 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.674 in42.52 mm N/A 0.003 in0.08 mm N/A -131 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS130 S-70 N/A
186422 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.612 in40.94 mm N/A 0.003 in0.08 mm N/A -130 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS129 S-70 N/A
186423 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.549 in39.34 mm N/A 0.003 in0.08 mm N/A -129 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS128 S-70 N/A
186424 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.487 in37.77 mm N/A 0.003 in0.08 mm N/A -128 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS127 S-70 N/A
186425 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.424 in36.17 mm N/A 0.003 in0.08 mm N/A -127 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS126 S-70 N/A
186426 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.362 in34.59 mm N/A 0.003 in0.08 mm N/A -126 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS125 S-70 N/A
186427 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.299 in32.99 mm N/A 0.003 in0.08 mm N/A -125 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS124 S-70 N/A
186428 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.237 in31.42 mm N/A 0.003 in0.08 mm N/A -124 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS123 S-70 N/A
186429 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.174 in29.82 mm N/A 0.003 in0.08 mm N/A -123 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS122 S-70 N/A
186430 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.112 in28.24 mm N/A 0.003 in0.08 mm N/A -122 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS121 S-70 N/A
186431 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 1.049 in26.64 mm N/A 0.003 in0.08 mm N/A -121 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS120 S-70 N/A
186432 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.987 in25.07 mm N/A 0.003 in0.08 mm N/A -120 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS119 S-70 N/A
186433 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.924 in23.47 mm N/A 0.003 in0.08 mm N/A -119 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS118 S-70 N/A
186434 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.862 in21.89 mm N/A 0.003 in0.08 mm N/A -118 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS117 S-70 N/A
186435 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.799 in20.29 mm N/A 0.003 in0.08 mm N/A -117 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS116 S-70 N/A
186436 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.737 in18.72 mm N/A 0.003 in0.08 mm N/A -116 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS115 S-70 N/A
186437 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.674 in17.12 mm N/A 0.003 in0.08 mm N/A -115 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS114 S-70 N/A
186438 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.612 in15.54 mm N/A 0.003 in0.08 mm N/A -114 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS113 S-70 N/A
186439 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.549 in13.94 mm N/A 0.003 in0.08 mm N/A -113 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS112 S-70 N/A
186440 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.487 in12.37 mm N/A 0.003 in0.08 mm N/A -112 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS111 S-70 N/A
186441 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.424 in10.77 mm N/A 0.003 in0.08 mm N/A -111 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS110 S-70 N/A
186442 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.362 in9.19 mm N/A 0.003 in0.08 mm N/A -110 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS109 S-70 N/A
186443 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.299 in7.59 mm N/A 0.003 in0.08 mm N/A -109 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS108 S-70 N/A
186444 		N/A BS Standard O-Ring N/A Silicone N/A 0.103 in2.62 mm N/A 70 N/A 0.237 in6.02 mm N/A 0.003 in0.08 mm N/A -108 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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