Metal Parts: 316 Stainless Steel, Hastelloy «C»
Spring: Hastelloy «C», Alloy AM-350
Rotary Face: Graphite, Tungsten Carbide, Silicon Carbide
Bellow: NBR (Nitrile), FKM (Viton®), CR (Neopreno), E.P.R (EPDM), Kalrez/Perlast (FFKM), Aflas (TFE/P), Creavey (PTFE/FKM)
Seat: Ceramic, Silicon Carbide, Tungsten Carbide
