Flange Type: ANSI B16.5 Raised Face (RF) or Ring Type Joint (RTJ), EN 1092 Form B Diaphragm and wetted part materials available in Hastelloy, Inconel, Monel, Tantalum, Titanium, Zirconium Coatings available in Gold, Rhodium, PFA and PTFEThe model CELL Pancake seal with welded diaphragm is suitable for mounting between flanges and used for contaminated, solidifying, hot or highly viscous media.