O-ring 8,73 x 1,78 NBR-70

NBR (Nitrile rubber) is the general term for acryl-nitrile butadiene polymer. O-rings are the most common sealing element, and because they are inexpensive and simple, the area for application of O-rings is very wide in hydraulic and pneumatic systems. Where working conditions and equipment are suitable, they can be used both in static and dynamic applications, but they are not recommended for rotary movements. Because they take up less space and provide two-sided sealing compared with other sealing elements, O-rings make designing easier. Obtaining good results from O-ring applications depends on suitable measurements, choosing correct materials, and suitable surface quality on metal parts. APPLICATION Used in almost every industry but especially in non-moving machinery and in static sealing applications, e.g. as flange or cover seals. Good chemical resistance to mineral oils and greases and hydraulic oils. Not suitable for outdoor use because of poor resistance to ozone and UV rays.