Material: UHMW PE hydrobic Color: White Surface finish: Smooth both s density: 40-50% of vo Hardness: Riger proof and impact resistant Chemical Resistance: Chemically inert to most chemicals and solvents Temperature Resistance: Up to 180 F in continuous usage, to 300 F in short term usage Size: 20" diameter X 1 2" thickness Pore Size: 40 micron