Mechanical Seals: 1) High quality and good service 2) Widely Used in Metallurgy, Pharmacy and Cars 3) ISO9001 4) Durable Mechanical Seals:1 ... , WM20 and WMFBD Industrial pump seal: WM1527, WMCG, WM58U 59U, WM5Q and WMCU Double mechanical seal: WM202/208, WM50D, WM47D ... and WD5ED Automobile seal: WMB, WMBRS, WMBS, WMBG, WMBR ...