GASKET, KLNGR C4401, 4.000" 150# FF

This flange gasket is supplied in green Klingersil C-4401 Class 150 full face built to a 4 inch nominal pipe size, a Class 150 pressure rating, and a thickness of 0.125 inch, catalogued under part number 13850FF125A0400FC. It fills the microscopic imperfections in flange faces so the joint holds pressure. This item is further identified as NPS, 0.125 THK.

It resists steam and hot water, a broad range of process chemicals, and elevated flange loads. Klingersil C-4401 delivers reliable sealing on flanges with modest surface finish, consistent thickness and density across the sheet. Applications involving strong oxidizing acids in some grades or service beyond the published pressure-temperature envelope call for a different compound.

Typical settings include power generation, chemical processing, and steam and hot water systems.

This item is sold individually under part number 13850FF125A0400FC. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.