O-ring 20.00 x 4.00 NBR70 (20x4) – in stock 4.8 CZK

inner diameter d1: 20 mm
cross-sectional diameter d2: 4 mm
material: NBR – nitrile butadiene rubber
hardness: 70 Shore A

O-rings are precision-formed circular sealing elements with high accuracy. The most suitable application of an O-ring is static; for dynamic applications certain limitations apply and must be respected.

The size of the groove — and therefore the sealing pressure — depends on whether the application is hydraulic or pneumatic. When choosing the groove width, make sure it is wider than the deformed O-ring.