UHMWPE identification methods: visual methods. The real UHMWPE surface smooth, uniform, smooth and very uniform density section UHMWPE sliders price, if not pure polyethylene material is faded and uneven density. UHMWPE is a polymer compound. UHMWPE molding: special. Ultra high molecular weight polyethylene (UHMW-PE) co-extruded lubrication (injection) There are two cases buying ultra-high molecular polyethylene sliders, one using the slit method lubricant is pressed into the mold cavity so that it between the inner surface of the molten material to form a lubricating layer; the second is the low viscosity of the resin blend to act as part of the product.