• 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
186369 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 0.421 in10.69 mm N/A 0.004 in0.10 mm N/A -205 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186370 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 0.359 in9.12 mm N/A 0.004 in0.10 mm N/A -204 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186371 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 0.296 in7.52 mm N/A 0.004 in0.10 mm N/A -203 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186372 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 0.234 in5.94 mm N/A 0.004 in0.10 mm N/A -202 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186373 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 0.171 in4.34 mm N/A 0.004 in0.10 mm N/A -201 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186121 		N/A BS Standard O-Ring N/A Silicone N/A 0.139 in3.53 mm N/A 70 N/A 1.016 in25.81 mm N/A 0.004 in0.10 mm N/A -618 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186206 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 25.940 in658.88 mm N/A 0.005 in0.13 mm N/A -395 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186207 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 24.940 in633.48 mm N/A 0.005 in0.13 mm N/A -394 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186208 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 23.940 in608.08 mm N/A 0.005 in0.13 mm N/A -393 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186209 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 22.940 in582.68 mm N/A 0.005 in0.13 mm N/A -392 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186210 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 21.955 in557.66 mm N/A 0.005 in0.13 mm N/A -391 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186211 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 20.955 in532.26 mm N/A 0.005 in0.13 mm N/A -390 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186212 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 19.955 in506.86 mm N/A 0.005 in0.13 mm N/A -389 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186213 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 18.955 in481.46 mm N/A 0.005 in0.13 mm N/A -388 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186214 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 17.955 in456.06 mm N/A 0.005 in0.13 mm N/A -387 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186215 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 16.955 in430.66 mm N/A 0.005 in0.13 mm N/A -386 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186216 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 15.955 in405.26 mm N/A 0.005 in0.13 mm N/A -385 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186217 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 14.975 in380.37 mm N/A 0.005 in0.13 mm N/A -384 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186218 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 13.975 in354.97 mm N/A 0.005 in0.13 mm N/A -383 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186219 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 12.975 in329.57 mm N/A 0.005 in0.13 mm N/A -382 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186220 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 11.975 in304.17 mm N/A 0.005 in0.13 mm N/A -381 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186221 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 11.475 in291.47 mm N/A 0.005 in0.13 mm N/A -380 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186222 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 10.975 in278.77 mm N/A 0.005 in0.13 mm N/A -379 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186223 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 10.475 in266.07 mm N/A 0.005 in0.13 mm N/A -378 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
186224 		N/A BS Standard O-Ring N/A Silicone N/A 0.210 in5.33 mm N/A 70 N/A 9.975 in253.37 mm N/A 0.005 in0.13 mm N/A -377 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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