... -PE is selflubricant,as a bearing even without grease it works better than steel or bronze bearing with grease, UHMW ... field of abrasion, selflubrication,impaction,vibration,corrosion,nonsticking etc,it\\\'s the best material for the substitution of bronze ... nonferrometal,stainless steel,other engineering plastics,rubber and leather etc.It is commonly used as gears,sprokets,rollers, mixer paddles ...