O-ring 40.00 x 1.90 NBR70 (40x1.9)

inner diameter d1: 40 mm
cross-sectional diameter d2: 1.9 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.