... without grease it works better than steel or bronze bearing with grease, UHMW-PE friction parts need no lubricant,maintain ... etc,it\\\'s the best material for the substitution of bronze and nonferrometal,stainless steel,other engineering plastics,rubber and leather ... commonly used as gears,sprokets,rollers, mixer paddles, pump impeller,bearing,chain and belt guides,wear strips etc. In material handing ...