Metcar Grade M-133 self-lubricating carbon-graphite material is approved to the National Sanitation Foundation Standard NSF 51-2012 for materials used in the construction of commercial food equipment. Oil-free and self-lubricating, the material is used in machine applications where rubbing or sliding is required, but oil and grease lubricants cannot be used. Typical applications include bearings, face seal rings, radial seal rings, piston rings, valve seats, vanes, rotors, end plates, cylinder liners, slides, runners and scrapers.

Metallized Carbon Corporation; 914-941-3738;