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.

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Inside Diamter (in)

Inside Diamter (mm)

Cross Section Width (in)

Cross Section Width (mm)

Item #

Inside Diamter

Cross Section Width

Durometer

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BS2 C-70 N/A 0.042 in1.07 mm N/A 0.050 in1.27 mm N/A 70 N/A 0.003 in0.08 mm N/A -002
BS3 C-70 N/A 0.056 in1.42 mm N/A 0.060 in1.52 mm N/A 70 N/A 0.003 in0.08 mm N/A -003
BS4 C-70 N/A 0.070 in1.78 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -004
BS5 C-70 N/A 0.101 in2.57 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -005
BS6 C-70 N/A 0.114 in2.90 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -006
BS7 C-70 N/A 0.145 in3.68 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -007
BS8 C-70 N/A 0.176 in4.47 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -008
BS9 C-70 N/A 0.208 in5.28 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -009
BS10 C-70 N/A 0.239 in6.07 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -010
BS11 C-70 N/A 0.301 in7.65 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -011
BS12 C-70 N/A 0.364 in9.25 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -012
BS13 C-70 N/A 0.426 in10.82 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -013
BS14 C-70 N/A 0.489 in12.42 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -014
BS15 C-70 N/A 0.551 in14.00 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -015
BS16 C-70 N/A 0.614 in15.6 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -016
BS17 C-70 N/A 0.676 in17.17 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -017
BS18 C-70 N/A 0.739 in18.77 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -018
BS19 C-70 N/A 0.801 in20.35 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -019
BS20 C-70 N/A 0.864 in21.95 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -020
BS21 C-70 N/A 0.926 in23.52 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -021
BS22 C-70 N/A 0.989 in25.12 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -022
BS23 C-70 N/A 1.051 in26.70 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -023
BS24 C-70 N/A 1.114 in28.30 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -024
BS25 C-70 N/A 1.176 in29.87 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -025
BS26 C-70 N/A 1.239 in31.47 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -026
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