Materials: Reprocessed UHMW PE. Standard Size: 1220*2440mm, 4*8 ft. Processing Method: Mould Pressing. Thickness: 8mm~200 mm. Density: 0.94g/cm3. Custom UHMW Ram Extrusions – Northern Plastic. With over 40 years of experience, Northern Plastics is rOkaygnized as a leader in the extrusion of stock and custom UHMW profiles.