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. Perfluoroelastomer is also known as FKKM and Perfloro.

Parts resist over 1,800 different chemicals, while offering the high temperature stability of PTFE (327°C). They’re used in aggressive chemical processing, pharmaceutical, oil rcovery, gas recovery, and aerospace applications. The proven, long-term performance of Kalrez® parts can mean less repairs, seal changes, inspections and equipment uptime for greater productivity and yield. 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

N/A
187534
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 4.86 in123.44 mm N/A 0.003 in0.08 mm N/A -546 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187535
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 4.61 in117.09 mm N/A 0.003 in0.08 mm N/A -544 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187536
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 4.36 in110.74 mm N/A 0.003 in0.08 mm N/A -542 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187537
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 4.110 in104.39 mm N/A 0.003 in0.08 mm N/A -540 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187538
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 3.86 in98.04 mm N/A 0.003 in0.08 mm N/A -538 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187539
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 3.61 in91.69 mm N/A 0.003 in0.08 mm N/A -536 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187540
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 3.36 in85.34 mm N/A 0.003 in0.08 mm N/A -534 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187541
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 3.11 in78.99 mm N/A 0.003 in0.08 mm N/A -532 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187542
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 1.553 in39.45 mm N/A 0.003 in0.08 mm N/A -519 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187543
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.070 in1.78 mm N/A 75 N/A 1.428 in36.27 mm N/A 0.003 in0.08 mm N/A -517 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187544
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 25.9401 in658.88 mm N/A 0.006 in0.15 mm N/A -475 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187545
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 24.940 in633.48 mm N/A 0.006 in0.15 mm N/A -474 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187546
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 23.940 in608.08 mm N/A 0.006 in0.15 mm N/A -473 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187547
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 22.940 in582.68 mm N/A 0.006 in0.15 mm N/A -472 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187548
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 21.955 in557.66 mm N/A 0.006 in0.15 mm N/A -471 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187549
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 20.955 in532.26 mm N/A 0.006 in0.15 mm N/A -470 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187550
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 19.955 in506.86 mm N/A 0.006 in0.15 mm N/A -469 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187551
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 19.455 in494.16 mm N/A 0.006 in0.15 mm N/A -468 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187552
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 18.955 in481.46 mm N/A 0.006 in0.15 mm N/A -467 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187553
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 18.455 in468.76 mm N/A 0.006 in0.15 mm N/A -466 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187554
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 17.955 in456.06 mm N/A 0.006 in0.15 mm N/A -465 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187555
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 17.455 in443.36 mm N/A 0.006 in0.15 mm N/A -464 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187556
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 16.9551 in430.66 mm N/A 0.006 in0.15 mm N/A -463 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187557
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 16.455 in417.96 mm N/A 0.006 in0.15 mm N/A -462 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187558
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 15.9551 in405.26 mm N/A 0.006 in0.15 mm N/A -461 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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