... fastness , acidproof alkaliproof, sound absorption, non-pollut Closed-Cell EPDM foam.For Packing, for it is light, and tear strengh, high ... cellEPDM Opened cellDensitykg/m3128144Sizesmm1000X20001000X2000Thicknessmm0.5-501-45HardnessAsker C55_Standard tolerance EPDM foam fire resistant