commonly used on valves.
High Temperature tolerant -70 to 400F temp range
Flanged silicone gasket for 4.0 inch
Flange helps gasket stay on ferrule while putting on clamp.
color may vary
40mpfx
Related;
1000-004 - 4.0 inch BUNA rubber gasket
1000-010 - 4.0 inch Teflon Gasket
1000-020 - 4.0 inch Silicone Gasket (this item)