... Mechanical Seals We can supply all types of pump kit machinery sealing elements and sealing auxiliary materials (alumina ceramics, carbon-graphite, rubber ... parts, and precision punching elements) Rubber parts: NBR, EPDM, Viton, silica ... WM1527, WMCG, WM58U 59U, WM5Q and WMCU Double mechanical seal: WM202/208, WM50D, WM47D and WD5ED Automobile ...