... types of pump kit machinery sealing elements and sealing auxiliary materials (alumina ceramics, carbon-graphite ... Rubber parts: NBR, EPDM, Viton, silica gel and chlorinated rubber Tungsten carbide and graphite Our products: Pump seal: WM301, WM155 ... , WM560A, WMBIA, WM1, WM20 and WMFBD Industrial pump seal: WM1527, WMCG, WM58U 59U, WM5Q and ...