BS Fluorosilicone 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.For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	BS Number	Call for a Quote	O-Ring Industries
BS435 F-70	N/A 188973	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.725 in145.42 mm	N/A 0.006 in0.15 mm	N/A -435	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS434 F-70	N/A 188974	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.75 in146.05 mm	N/A 0.006 in0.15 mm	N/A -434	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS433 F-70	N/A 188975	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.475 in139.07 mm	N/A 0.006 in0.15 mm	N/A -433	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS432 F-70	N/A 188976	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.350 in135.89 mm	N/A 0.006 in0.15 mm	N/A -432	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS431 F-70	N/A 188977	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.225 in132.72 mm	N/A 0.006 in0.15 mm	N/A -431	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS430 F-70	N/A 188978	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 5.100 in129.54 mm	N/A 0.006 in0.15 mm	N/A -430	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS429 F-70	N/A 188979	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.975 in126.37 mm	N/A 0.006 in0.15 mm	N/A -429	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS428 F-70	N/A 188980	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.850 in123.19 mm	N/A 0.006 in0.15 mm	N/A -428	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS427 F-70	N/A 188981	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.725 in120.02 mm	N/A 0.006 in0.15 mm	N/A -427	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS426 F-70	N/A 188982	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.75 in120.65 mm	N/A 0.006 in0.15 mm	N/A -426	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS425 F-70	N/A 188983	N/A BS Standard O-Ring	N/A Flurosilicone	N/A 0.275 in6.99 mm	N/A 70	N/A 4.475 in113.67 mm	N/A 0.006 in0.15 mm	N/A -425	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS395 F-70	N/A 188984	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS394 F-70	N/A 188985	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS393 F-70	N/A 188986	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS392 F-70	N/A 188987	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS391 F-70	N/A 188988	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS390 F-70	N/A 188989	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS389 F-70	N/A 188990	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS388 F-70	N/A 188991	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS387 F-70	N/A 188992	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS386 F-70	N/A 188993	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS385 F-70	N/A 188994	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS384 F-70	N/A 188995	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS383 F-70	N/A 188996	N/A BS Standard O-Ring	N/A Flurosilicone	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.
BS382 F-70	N/A 188997	N/A BS Standard O-Ring	N/A Flurosilicone	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
188973

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.725 in145.42 mm

N/A 0.006 in0.15 mm

N/A -435

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS434 F-70

N/A
188974

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.75 in146.05 mm

N/A 0.006 in0.15 mm

N/A -434

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS433 F-70

N/A
188975

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.475 in139.07 mm

N/A 0.006 in0.15 mm

N/A -433

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS432 F-70

N/A
188976

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.350 in135.89 mm

N/A 0.006 in0.15 mm

N/A -432

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS431 F-70

N/A
188977

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.225 in132.72 mm

N/A 0.006 in0.15 mm

N/A -431

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS430 F-70

N/A
188978

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 5.100 in129.54 mm

N/A 0.006 in0.15 mm

N/A -430

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS429 F-70

N/A
188979

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.975 in126.37 mm

N/A 0.006 in0.15 mm

N/A -429

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS428 F-70

N/A
188980

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.850 in123.19 mm

N/A 0.006 in0.15 mm

N/A -428

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS427 F-70

N/A
188981

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.725 in120.02 mm

N/A 0.006 in0.15 mm

N/A -427

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS426 F-70

N/A
188982

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.75 in120.65 mm

N/A 0.006 in0.15 mm

N/A -426

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS425 F-70

N/A
188983

N/A BS Standard O-Ring

N/A Flurosilicone

N/A 0.275 in6.99 mm

N/A 70

N/A 4.475 in113.67 mm

N/A 0.006 in0.15 mm

N/A -425

N/A

N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

BS395 F-70

N/A
188984

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS394 F-70

N/A
188985

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS393 F-70

N/A
188986

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS392 F-70

N/A
188987

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS391 F-70

N/A
188988

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS390 F-70

N/A
188989

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS389 F-70

N/A
188990

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS388 F-70

N/A
188991

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS387 F-70

N/A
188992

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS386 F-70

N/A
188993

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS385 F-70

N/A
188994

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS384 F-70

N/A
188995

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS383 F-70

N/A
188996

N/A BS Standard O-Ring

N/A Flurosilicone

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.

BS382 F-70

N/A
188997

N/A BS Standard O-Ring

N/A Flurosilicone

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.