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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
BS31 C-70 N/A
183692 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.739 in44.17 mm N/A 0.003 in0.08 mm N/A -031 N/A N/A O-rings are used in the military defense and agriculture industries.
BS30 C-70 N/A
183693 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.614 in41.00 mm N/A 0.003 in0.08 mm N/A -030 N/A N/A O-rings are used in the military defense and agriculture industries.
BS29 C-70 N/A
183694 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.489 in37.82 mm N/A 0.003 in0.08 mm N/A -029 N/A N/A O-rings are used in the military defense and agriculture industries.
BS28 C-70 N/A
183695 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.364 in34.65 mm N/A 0.003 in0.08 mm N/A -028 N/A N/A O-rings are used in the military defense and agriculture industries.v
BS27 C-70 N/A
183696 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.301 in33.05 mm N/A 0.003 in0.08 mm N/A -027 N/A N/A O-rings are used in the military defense and agriculture industries.
BS26 C-70 N/A
183697 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.239 in31.47 mm N/A 0.003 in0.08 mm N/A -026 N/A N/A O-rings are used in the military defense and agriculture industries.
BS25 C-70 N/A
183698 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.176 in29.87 mm N/A 0.003 in0.08 mm N/A -025 N/A N/A O-rings are used in the military defense and agriculture industries.
BS24 C-70 N/A
183699 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.114 in28.30 mm N/A 0.003 in0.08 mm N/A -024 N/A N/A O-rings are used in the military defense and agriculture industries.
BS23 C-70 N/A
183700 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 1.051 in26.70 mm N/A 0.003 in0.08 mm N/A -023 N/A N/A O-rings are used in the military defense and agriculture industries.
BS22 C-70 N/A
183701 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.989 in25.12 mm N/A 0.003 in0.08 mm N/A -022 N/A N/A O-rings are used in the military defense and agriculture industries.
BS21 C-70 N/A
183702 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.926 in23.52 mm N/A 0.003 in0.08 mm N/A -021 N/A N/A O-rings are used in the military defense and agriculture industries.
BS20 C-70 N/A
183703 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.864 in21.95 mm N/A 0.003 in0.08 mm N/A -020 N/A N/A O-rings are used in the military defense and agriculture industries.
BS19 C-70 N/A
183704 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.801 in20.35 mm N/A 0.003 in0.08 mm N/A -019 N/A N/A O-rings are used in the military defense and agriculture industries.
BS18 C-70 N/A
183705 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.739 in18.77 mm N/A 0.003 in0.08 mm N/A -018 N/A N/A O-rings are used in the military defense and agriculture industries.
BS17 C-70 N/A
183706 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.676 in17.17 mm N/A 0.003 in0.08 mm N/A -017 N/A N/A O-rings are used in the military defense and agriculture industries.
BS16 C-70 N/A
183707 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.614 in15.6 mm N/A 0.003 in0.08 mm N/A -016 N/A N/A O-rings are used in the military defense and agriculture industries.
BS15 C-70 N/A
183708 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.551 in14.00 mm N/A 0.003 in0.08 mm N/A -015 N/A N/A O-rings are used in the military defense and agriculture industries.
BS14 C-70 N/A
183709 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.489 in12.42 mm N/A 0.003 in0.08 mm N/A -014 N/A N/A O-rings are used in the military defense and agriculture industries.v
BS13 C-70 N/A
183710 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.426 in10.82 mm N/A 0.003 in0.08 mm N/A -013 N/A N/A O-rings are used in the military defense and agriculture industries.
BS12 C-70 N/A
183711 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.364 in9.25 mm N/A 0.003 in0.08 mm N/A -012 N/A N/A O-rings are used in the military defense and agriculture industries.
BS11 C-70 N/A
183712 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.301 in7.65 mm N/A 0.003 in0.08 mm N/A -011 N/A N/A O-rings are used in the military defense and agriculture industries.
BS10 C-70 N/A
183713 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.239 in6.07 mm N/A 0.003 in0.08 mm N/A -010 N/A N/A O-rings are used in the military defense and agriculture industries.
BS9 C-70 N/A
183714 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.208 in5.28 mm N/A 0.003 in0.08 mm N/A -009 N/A N/A O-rings are used in the military defense and agriculture industries.
BS8 C-70 N/A
183715 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.176 in4.47 mm N/A 0.003 in0.08 mm N/A -008 N/A N/A O-rings are used in the military defense and agriculture industries.
BS7 C-70 N/A
183716 		N/A BS Standard O-Ring N/A Neoprene N/A 0.070 in1.78 mm N/A 70 N/A 0.145 in3.68 mm N/A 0.003 in0.08 mm N/A -007 N/A N/A O-rings are used in the military defense and agriculture industries.
Unit of Measure
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