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PAI Industries · Engine
421268
In stock · ships from Knoxville
This is a rectangular sealing ring (cam O-ring) used in heavy-duty air brake systems, primarily on International/Navistar and Mack trucks.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
International
Other applications
International
Other applications
Verify exact camshaft specification before ordering; fits specific brake camshaft applications.
Part data verified against 2 catalog sources
Numbers this part supersedes or interchanges with. Showing 6 of 6.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It seals the camshaft assembly inside the brake chamber to prevent air leaks. Made from Viton with a Teflon coating, it offers high heat and chemical resistance, making it a durable replacement for a worn or leaking original seal.
Part Number: 421268
RECTANGULAR SEALING RING
Vendor: PAI Industries
Dealer: KP Services Crossville
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