• 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.
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O-Ring Industries

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N/A
186357 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.171 in29.74 mm N/A 0.004 in0.10 mm N/A -217 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186356 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.234 in31.34 mm N/A 0.004 in0.10 mm N/A -218 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186355 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.296 in32.92 mm N/A 0.004 in0.10 mm N/A -219 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186354 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.359 in34.52 mm N/A 0.004 in0.10 mm N/A -220 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186353 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.421 in36.09 mm N/A 0.004 in0.10 mm N/A -221 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186352 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.484 in37.69 mm N/A 0.004 in0.10 mm N/A -222 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186351 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.609 in40.87 mm N/A 0.004 in0.10 mm N/A -223 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186350 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.734 in44.04 mm N/A 0.004 in0.10 mm N/A -224 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186349 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.859 in47.22 mm N/A 0.004 in0.10 mm N/A -225 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186348 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.984 in50.39 mm N/A 0.004 in0.10 mm N/A -226 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186347 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.109 in53.57 mm N/A 0.004 in0.10 mm N/A -227 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186346 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.234 in56.74 mm N/A 0.004 in0.10 mm N/A -228 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186345 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.359 in59.92 mm N/A 0.004 in0.10 mm N/A -229 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186344 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.484 in63.09 mm N/A 0.004 in0.10 mm N/A -230 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186343 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.609 in66.27 mm N/A 0.004 in0.10 mm N/A -231 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186342 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.734 in69.44 mm N/A 0.004 in0.10 mm N/A -232 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186341 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.859 in72.62 mm N/A 0.004 in0.10 mm N/A -233 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186340 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 2.984 in75.79 mm N/A 0.004 in0.10 mm N/A -234 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186339 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.109 in78.97 mm N/A 0.004 in0.10 mm N/A -235 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186338 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.234 in82.14 mm N/A 0.004 in0.10 mm N/A -236 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186337 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.359 in85.32 mm N/A 0.004 in0.10 mm N/A -237 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186336 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.484 in88.49 mm N/A 0.004 in0.10 mm N/A -238 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186335 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.609 in91.67 mm N/A 0.004 in0.10 mm N/A -239 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186334 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.734 in94.84 mm N/A 0.004 in0.10 mm N/A -240 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186333 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 3.859 in98.02 mm N/A 0.004 in0.10 mm N/A -241 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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