GASKET, KLNGR C4401, 4.000" 900# RF

13850RF062E0400FC is a green Klingersil C-4401 Class 900 ring face Flange Gasket built to a 4 inch nominal pipe size, a Class 900 pressure rating, and a thickness of 0.062 inch. In service, this flange gasket seals a bolted flange connection across the full pressure rating of the class. This item is further identified as NPS, 0.062 THK.

The material holds up against hydrocarbons, a broad range of process chemicals, and steam and hot water. That behavior comes from the compound itself: Klingersil C-4401 delivers reliable sealing on flanges with modest surface finish, excellent torque retention and low creep relaxation. Verify compatibility before use with service beyond the published pressure-temperature envelope or strong oxidizing acids in some grades.

Maintenance and OEM teams specify it across steam and hot water systems, pulp and paper, and power generation.

This item is sold individually under part number 13850RF062E0400FC. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.