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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Cross Section Width (mm)

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BS617 C-70 N/A 0.703 in17.86 mm N/A 0.103 in2.62 mm N/A 70 N/A 0.003 in0.08 mm N/A -617
BS616 C-70 N/A 0.594 in15.09 mm N/A 0.103 in2.62 mm N/A 70 N/A 0.003 in0.08 mm N/A -616
BS615 C-70 N/A 0.516 in13.11 mm N/A 0.103 in2.62 mm N/A 70 N/A 0.003 in0.08 mm N/A -615
BS614 C-70 N/A 0.469 in11.91 mm N/A 0.103 in2.62 mm N/A 70 N/A 0.003 in0.08 mm N/A -614
BS613 C-70 N/A 0.391 in9.93 mm N/A 0.103 in2.62 mm N/A 70 N/A 0.003 in0.08 mm N/A -613
BS611 C-70 N/A 0.344 in8.74 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -611
BS610 C-70 N/A 0.266 in6.76 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -610
BS607 C-70 N/A 0.100 in2.54 mm N/A 0.040 in1.02 mm N/A 70 N/A 0.003 in0.08 mm N/A -607
BS606 C-70 N/A 0.070 in1.78 mm N/A 0.040 in1.02 mm N/A 70 N/A 0.003 in0.08 mm N/A -606
BS562 C-70 N/A 6.845 in173.86 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -562
BS561 C-70 N/A 6.72 in170.69 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -561
BS560 C-70 N/A 6.695 in170.05 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -560
BS559 C-70 N/A 6.470 in164.34 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -559
BS558 C-70 N/A 6.345 in161.16 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -558
BS557 C-70 N/A 6.22 in157.99 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -557
BS556 C-70 N/A 6.095 in154.81 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -556
BS555 C-70 N/A 5.97 in151.64 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -555
BS554 C-70 N/A 5.845 in148.46 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -554
BS553 C-70 N/A 5.72 in145.29 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -553
BS552 C-70 N/A 5.595 in142.11 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -552
BS551 C-70 N/A 5.47 in138.94 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -551
BS550 C-70 N/A 5.345 in135.76 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -550
BS548 C-70 N/A 5.095 in129.41 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -548
BS546 C-70 N/A 4.86 in123.44 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -546
BS544 C-70 N/A 4.61 in117.09 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -544
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