We offer O-ring, rectangular-ring, rubber gasket, rubber washer and so on.We can ... 1) We Specialize in designing and manufacturing all the oil seal, O-ring and other rubber parts. You ... can get more information on our website and alibaba. 2) ... machinery, trucks, buses, trailers, heavy duty machine, pump and other equipment.3) Material: NBR, FKM (VITON), MVQ ...