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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.
BS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

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O-Ring Industries

Quantity
BS546 AFLAS-75 N/A
186608 		N/A BS Standard O-Ring N/A Aflas 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.
BS544 AFLAS-75 N/A
186609 		N/A BS Standard O-Ring N/A Aflas 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.
BS542 AFLAS-75 N/A
186610 		N/A BS Standard O-Ring N/A Aflas 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.
BS540 AFLAS-75 N/A
186611 		N/A BS Standard O-Ring N/A Aflas N/A 0.070 in1.78 mm N/A 75 N/A 4.11 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.
BS538 AFLAS-75 N/A
186612 		N/A BS Standard O-Ring N/A Aflas 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.
BS536 AFLAS-75 N/A
186613 		N/A BS Standard O-Ring N/A Aflas 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.
BS534 AFLAS-75 N/A
186614 		N/A BS Standard O-Ring N/A Aflas 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.
BS532 AFLAS-75 N/A
186615 		N/A BS Standard O-Ring N/A Aflas 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.
BS519 AFLAS-75 N/A
186616 		N/A BS Standard O-Ring N/A Aflas N/A 0.070 in1.78 mm N/A 75 N/A 1.55 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.
BS517 AFLAS-75 N/A
186617 		N/A BS Standard O-Ring N/A Aflas N/A 0.070 in1.78 mm N/A 75 N/A 1.43 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.
BS475 AFLAS-75 N/A
186618 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 25.94 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.
BS474 AFLAS-75 N/A
186619 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 24.94 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.
BS473 AFLAS-75 N/A
186620 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 29.85 in758.08 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.
BS472 AFLAS-75 N/A
186621 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 22.94 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.
BS471 AFLAS-75 N/A
186622 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 21.96 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.
BS470 AFLAS-75 N/A
186623 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 20.96 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.
BS469 AFLAS-75 N/A
186624 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 19.96 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.
BS468 AFLAS-75 N/A
186625 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 19.46 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.
BS467 AFLAS-75 N/A
186626 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 18.96 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.
BS466 AFLAS-75 N/A
186627 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 18.46 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.
BS465 AFLAS-75 N/A
186628 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 17.96 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.
BS464 AFLAS-75 N/A
186629 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 17.46 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.
BS463 AFLAS-75 N/A
186630 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 16.96 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.
BS462 AFLAS-75 N/A
186631 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 16.46 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.
BS461 AFLAS-75 N/A
186632 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 15.96 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.
Unit of Measure
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