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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. Neoprene is also known as Chloroprene.

Neoprene resists fats, oils and petroleum products. Stands up well in sunlight. Low flammability - burns when exposed to flames, but self-extinguishes when flame is removed. Generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range. 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 C-70 N/A
183542 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS253 C-70 N/A
183543 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS252 C-70 N/A
183544 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS251 C-70 N/A
183545 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.v
BS250 C-70 N/A
183546 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS249 C-70 N/A
183547 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS248 C-70 N/A
183548 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS247 C-70 N/A
183549 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS246 C-70 N/A
183550 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS245 C-70 N/A
183551 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS244 C-70 N/A
183552 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS243 C-70 N/A
183553 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS242 C-70 N/A
183554 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS241 C-70 N/A
183555 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS240 C-70 N/A
183556 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS239 C-70 N/A
183557 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS238 C-70 N/A
183558 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS237 C-70 N/A
183559 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS236 C-70 N/A
183560 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.v
BS235 C-70 N/A
183561 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS234 C-70 N/A
183562 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS233 C-70 N/A
183563 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS232 C-70 N/A
183564 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS231 C-70 N/A
183565 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
BS230 C-70 N/A
183566 		N/A BS Standard O-Ring N/A Neoprene 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 defense and agriculture industries.
Unit of Measure
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