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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
BS254 EP-70 N/A
184005 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 5.484 in139.29 mm N/A 0.004 in0.10 mm N/A -254 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS253 EP-70 N/A
184006 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 5.359 in136.12 mm N/A 0.004 in0.10 mm N/A -253 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS252 EP-70 N/A
184007 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 5.234 in132.94 mm N/A 0.004 in0.10 mm N/A -252 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS251 EP-70 N/A
184008 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 5.109 in129.77 mm N/A 0.004 in0.10 mm N/A -251 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS250 EP-70 N/A
184009 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.984 in126.59 mm N/A 0.004 in0.10 mm N/A -250 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS249 EP-70 N/A
184010 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.859 in123.42 mm N/A 0.004 in0.10 mm N/A -249 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS248 EP-70 N/A
184011 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.734 in120.24 mm N/A 0.004 in0.10 mm N/A -248 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS247 EP-70 N/A
184012 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.609 in117.07 mm N/A 0.004 in0.10 mm N/A -247 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS246 EP-70 N/A
184013 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.484 in113.89 mm N/A 0.004 in0.10 mm N/A -246 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS245 EP-70 N/A
184014 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.359 in110.72 mm N/A 0.004 in0.10 mm N/A -245 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS244 EP-70 N/A
184015 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.234 in107.54 mm N/A 0.004 in0.10 mm N/A -244 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS243 EP-70 N/A
184016 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 4.109 in104.37 mm N/A 0.004 in0.10 mm N/A -243 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS242 EP-70 N/A
184017 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.984 in101.19 mm N/A 0.004 in0.10 mm N/A -242 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS241 EP-70 N/A
184018 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.859 in98.02 mm N/A 0.004 in0.10 mm N/A -241 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS240 EP-70 N/A
184019 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.734 in94.84 mm N/A 0.004 in0.10 mm N/A -240 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS239 EP-70 N/A
184020 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.609 in91.67 mm N/A 0.004 in0.10 mm N/A -239 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS238 EP-70 N/A
184021 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.484 in88.49 mm N/A 0.004 in0.10 mm N/A -238 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS237 EP-70 N/A
184022 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.359 in85.32 mm N/A 0.004 in0.10 mm N/A -237 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS236 EP-70 N/A
184023 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.234 in82.14 mm N/A 0.004 in0.10 mm N/A -236 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS235 EP-70 N/A
184024 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 3.109 in78.97 mm N/A 0.004 in0.10 mm N/A -235 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS234 EP-70 N/A
184025 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 2.984 in75.79 mm N/A 0.004 in0.10 mm N/A -234 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS233 EP-70 N/A
184026 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 2.859 in72.62 mm N/A 0.004 in0.10 mm N/A -233 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS232 EP-70 N/A
184027 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 2.734 in69.44 mm N/A 0.004 in0.10 mm N/A -232 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS231 EP-70 N/A
184028 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 2.609 in66.27 mm N/A 0.004 in0.10 mm N/A -231 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS230 EP-70 N/A
184029 		N/A BS Standard O-Ring N/A EP N/A 0.139 in3.53 mm N/A 70 N/A 2.484 in63.09 mm N/A 0.004 in0.10 mm N/A -230 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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