Know for being very good type self lubricating mechanical plastics is Black Cast Natural Nylon type 6 material. This grade of plastic has been produced from Dupont resin for over 40 years.

Dupont Cast Natural Nylon type 6

Dupont Nylon is a super tough and durable mechanical plastic. This excellent material is frequently chosen for critical needs like machined parts that need to be self-lubricating.  If you need a quality material simply click here, %LINK%
This exceptional material excels with extended use and are typical when using Nylon. Nylon comes in a wide range of sizes and shapes, including thin sheet to massive blocks. The Dupont Extruded Nylon type 6 material are readily available.

Considering using Delrin Homopolymer compared to BASF Acetal

Performance Plastic materials

nylon 6/6 sheet