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.

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Inside Diamter (in)

Inside Diamter (mm)

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Cross Section Width (mm)

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BS607 EP-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 EP-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
BS2 EP-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 EP-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
BS903 EP-70 N/A 0.301 in7.65 mm N/A 0.064 in1.63 mm N/A 70 N/A 0.003 in0.08 mm N/A -903
BS902 EP-70 N/A 0.239 in6.07 mm N/A 0.064 in1.63 mm N/A 70 N/A 0.003 in0.08 mm N/A -902
BS806 EP-70 N/A 0.437 in11.10 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -806
BS804 EP-70 N/A 0.313 in7.94 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -804
BS803 EP-70 N/A 0.25 in6.35 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -803
BS802 EP-70 N/A 0.187 in4.75 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -802
BS801 EP-70 N/A 0.125 in3.18 mm N/A 0.070 in1.78 mm N/A 70 N/A 0.003 in0.08 mm N/A -801
BS562 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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 EP-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
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