Tungsten Carbide/ silicon seal LSWC: 1. Density: 14.8~15g/cm3 2. Hardness: 88~ ... Products: 1) Cemented Carbide Products. a) Wear-resistant parts Mechanical seal rings,Sleeves, Nozzles, Valve ball, Valve seat, Drawing dies, Stamping dies ... , Indexable inserts, Woodworking inserts and glass cutter. Tungsten Carbide mechanical seal LSWC