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 is a copolymer of Tetrafluoroethylene (TFE) and propylene. Its chemical resistance is excellent across a wide range of aggressive media.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
187258
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 3.98 in101.19 mm N/A 0.004 in0.10 mm N/A -242 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187257
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.11 in104.37 mm N/A 0.004 in0.10 mm N/A -243 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187256
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.23 in107.54 mm N/A 0.004 in0.10 mm N/A -244 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187255
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.36 in110.72 mm N/A 0.004 in0.10 mm N/A -245 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187254
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.48 in113.89 mm N/A 0.004 in0.10 mm N/A -246 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187253
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.61 in117.07 mm N/A 0.004 in0.10 mm N/A -247 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187252
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.73 in120.24 mm N/A 0.004 in0.10 mm N/A -248 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187251
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.86 in123.42 mm N/A 0.004 in0.10 mm N/A -249 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187250
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 4.98 in126.59 mm N/A 0.004 in0.10 mm N/A -250 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187249
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.11 in129.77 mm N/A 0.004 in0.10 mm N/A -251 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187248
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.23 in132.94 mm N/A 0.004 in0.10 mm N/A -252 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187247
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.36 in136.12 mm N/A 0.004 in0.10 mm N/A -253 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187246
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.48 in139.29 mm N/A 0.004 in0.10 mm N/A -254 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187245
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.61 in142.47 mm N/A 0.004 in0.10 mm N/A -255 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187244
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.73 in145.64 mm N/A 0.004 in0.10 mm N/A -256 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187243
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.86 in148.82 mm N/A 0.004 in0.10 mm N/A -257 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187242
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 5.98 in151.99 mm N/A 0.004 in0.10 mm N/A -258 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187241
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 6.23 in158.34 mm N/A 0.004 in0.10 mm N/A -259 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187240
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 6.48 in164.69 mm N/A 0.004 in0.10 mm N/A -275 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187239
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 6.73 in171.04 mm N/A 0.004 in0.10 mm N/A -261 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187238
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 6.98 in177.39 mm N/A 0.004 in0.10 mm N/A -262 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187237
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 7.23 in183.74 mm N/A 0.004 in0.10 mm N/A -263 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187236
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 7.48 in190.09 mm N/A 0.004 in0.10 mm N/A -264 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187235
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 7.73 in196.44 mm N/A 0.004 in0.10 mm N/A -265 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187234
N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 83 N/A 7.98 in202.79 mm N/A 0.004 in0.10 mm N/A -266 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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