Metal Parts: 304 Stainless Steel
Spring: 304 Stainless Steel
Rotary Face: Graphite, Silicon Carbide, Phenolic Carbon
Bellow: NBR (Nitrile), FKM (Viton®), CR (Neoprene®), E.P.R (EPDM).
Seat: Ceramic, Silicon Carbide, Tungsten Carbide, Stainless Steel, Ni-Resist.
