2.5" 150# FF .125" THK C4401

This gasket kit is supplied in Klingersil C-4401, catalogued under part number FLKC4401FF125A2.5. It consolidates matched sealing components into one part number. Source specification: Stud Flange Kit.

Klingersil C-4401 is specified for consistent thickness and density across the sheet, excellent torque retention and low creep relaxation. It resists elevated flange loads, steam and hot water, and a broad range of process chemicals. It should not be specified for service in strong oxidizing acids in some grades or service beyond the published pressure-temperature envelope.

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

Stocked as FLKC4401FF125A2.5 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.