Acetal provides high strength and stiffness coupled with enhanced dimensional stability and ease of machining. As a semi-crystalline material, acetal is also characterized by a low coefficient of friction and good wear properties, especially in wet environments.
Because acetal absorbs minimal amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption results in excellent dimensional stability for close tolerance machined parts. In high moisture or submerged applications, acetal bearings outperform nylon 4 to 1. Acetal is ideally suited for close tolerance machinical parts and electrical insulators which require strenth and stiffness. It also offers resistance to a wide range of chemicals including many solvents.
Available Materials (click material for data sheets when available)
EA036 – Acetal, Unfilled – General purpose acetal for use in the applications called out above.
EA037 – Acetal, PTFE Filled – For use in moving parts in which low friction and long wear life are important, having excellent sliding and frictional properties. Blends can operate at higher speeds while exhibiting reduced wear. These bearings are also essentially free of slip-stick behavior because the static and dynamic coefficient of friction are closer than with most plastics.