Know for being very good variety self lubricating mechanical plastics is Black Natural Extruded Nylon type 6/6 material. This grade of plastic has been available for decades.

Dupont Natural Cast Nylon type 6 materials

Nylon from Dupont is well known for being wear resistant. This excellent material is a common material for important products like machined parts that need to be self-lubricating.  If Nylon is a material you would like to know more about simply click here, %LINK%
Long running and smooth performance are typical for Nylon. Nylon is available in a massive selection of sizes and shapes, including small diameter rod to massive diameters. The Natural Black Cast Nylon type 6 are readily available.

Performance Plastic materials

nylon 6/6 sheet