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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. EP is also known as: Eythylene Propylene, EPR, EPDM, EPT, E.

EP is an elastomer which is characterized by wide range of applications and good chemical resistance. Ethylene propylene compounds have good resistance to detergents, alkalis, mild acids, greases, silicone oils, and alcohols.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
BS435 EP-70 N/A
183880 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183881 		N/A BS Standard O-Ring N/A EP N/A 0.275 in6.99 mm N/A 70 N/A 5.600 in142.24 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 EP-70 N/A
183882 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183883 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183884 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183885 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183886 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183887 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183888 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183889 		N/A BS Standard O-Ring N/A EP N/A 0.275 in6.99 mm N/A 70 N/A 4.600 in116.84 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 EP-70 N/A
183890 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183891 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183892 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183893 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183894 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183895 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183896 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183897 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183898 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183899 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183900 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183901 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183902 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183903 		N/A BS Standard O-Ring N/A EP 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 EP-70 N/A
183904 		N/A BS Standard O-Ring N/A EP 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.
Unit of Measure
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