... ,Exotics HNBR, NBR-HT, FPM/FKM, Butyl, PTFE Coated (SIGMACOAT), Food Industry Certified Gasket, AFM Hard gasketsFixation Method: SIGMAFIX Adhesive-free ... Standard: Studded with optional 304/316 liner, (ANSI, DIN) flanges, food stuff connections, Exotics Ti, SMO, Hastelloy, and 904L Codes and Standards ...