... . Light weight and easily machinedUHMW-PE is lighter than water,weighs approximately 1/8 that of steel,the ... same part UHMWPE has lower price than steel,need no maintain,easy to machine,conventionally ... selflubricant,as a bearing even without grease it works better than steel or bronze bearing with grease, UHMW-PE ... it. UHMW-PE\\\'s water absorption is less than 0.01% only 1% that of nylon66,in ...