One of the best known grade slip tolerant engineering plastics is Black Cast Nylon type 66 . This plastic material has been available for decades.

Black Natural Cast Nylon type 6/6

Dupont Nylon is well known for being wear resistant. Known for abrasion resistance is the preferred material for critical needs like machining critical wear parts for machines.  If Nylon is a material you would like to know more about simply click here, %LINK%
Long running and smooth performance are typical when using Nylon. Nylon has one of the widest ranges of sizes and shapes, including small diameter rod to massive diameters. The Natural Black Cast Nylon type 66 material are readily available.

Looking for the best Delrin Homopolymer versus Copolymer Acetal

Performance Plastic materials

nylon 6/6 sheet