HMW (PE 500 aka HD 500) polyethylene has a density 500,000 g/mol, mpared with 300,000 g/mol for standard HDPE or 1,000,000 g/mol for UHMW. HMW PE 500 exhibits a good mbination of stiffness, toughness, mechanical damping ability with wear & abrasion resistance. It is readily available in many lors.