8" 300# RF .125" THK C4401

APG stocks the FLKC4401RF125B8, a Klingersil C-4401 Gasket Kit. A gasket kit consolidates matched sealing components into one part number. Source specification: Stud Flange Kit.

The compound resists elevated flange loads, a broad range of process chemicals, and hydrocarbons. That behavior comes from the compound itself: Klingersil C-4401 delivers consistent thickness and density across the sheet, clean release and easy removal at teardown. Exposure to service beyond the published pressure-temperature envelope or strong oxidizing acids in some grades will shorten service life.

You will find this material specified across steam and hot water systems, pulp and paper, and refining.

Order part number FLKC4401RF125B8, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.