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
187559
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 15.475 in393.07 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
187560
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 14.9751 in380.37 mm N/A 0.006 in0.15 mm N/A -459 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187561
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 14.475 in367.67 mm N/A 0.006 in0.15 mm N/A -458 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187562
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 13.9751 in354.97 mm N/A 0.006 in0.15 mm N/A -457 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187563
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 13.475 in342.27 mm N/A 0.006 in0.15 mm N/A -456 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187564
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 12.975 in329.57 mm N/A 0.006 in0.15 mm N/A -455 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187565
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 12.475 in316.87 mm N/A 0.006 in0.15 mm N/A -454 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187566
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 11.975 in304.17 mm N/A 0.006 in0.15 mm N/A -453 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187567
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 11.475 in291.47 mm N/A 0.006 in0.15 mm N/A -452 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187568
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 10.975 in278.77 mm N/A 0.006 in0.15 mm N/A -451 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187569
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 10.475 in266.07 mm N/A 0.006 in0.15 mm N/A -450 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187570
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 9.975 in253.37 mm N/A 0.006 in0.15 mm N/A -449 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187571
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 9.475 in240.67 mm N/A 0.006 in0.15 mm N/A -448 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187572
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 8.975 in227.97 mm N/A 0.006 in0.15 mm N/A -447 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187573
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 8.475 in215.27 mm N/A 0.006 in0.15 mm N/A -446 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187574
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 7.975 in202.57 mm N/A 0.006 in0.15 mm N/A -445 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187575
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 7.725 in196.22 mm N/A 0.006 in0.15 mm N/A -444 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187576
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 7.475 in189.87 mm N/A 0.006 in0.15 mm N/A -443 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187577
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 7.225 in183.52 mm N/A 0.006 in0.15 mm N/A -442 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187578
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 6.975 in177.17 mm N/A 0.006 in0.15 mm N/A -441 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187579
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 6.725 in170.82 mm N/A 0.006 in0.15 mm N/A -440 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187580
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 6.475 in164.47 mm N/A 0.006 in0.15 mm N/A -439 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187581
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 6.225 in158.12 mm N/A 0.006 in0.15 mm N/A -438 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187582
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 5.975 in151.77 mm N/A 0.006 in0.15 mm N/A -437 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
N/A
187583
N/A BS Standard O-Ring N/A Perfluoroelastomer N/A 0.275 in6.99 mm N/A 75 N/A 5.850 in148.59 mm N/A 0.006 in0.15 mm N/A -436 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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