... than water,weighs approximately 1/8 that of steel,the same part UHMWPE has lower price than steel,need no maintain,easy ... any plastics even steel.4. Self lubricationUHMW-PE is selflubricant,as a bearing even without grease it works better than steel ... engineering plastics,rubber and leather etc.It is commonly used as gears,sprokets,rollers, mixer paddles, pump impeller,bearing,chain and ...