... ozone, and oxidation. HVACThis rubber sponge material proves beneficial in many HVAC systems and other flexible sealing applications, as ... .040)Water vapor permeability perm-in (kg/m·s·pa)0.08 (1.16×10-13)ASTM E96 Procedure ... 4", 1-1/2", 2" (3, 6, 9, 13, 16, 19, 25, 32 , 40, 50)-Width, sheet/rollin (m ... 7, 6, 4, 3, 3, 2.5)-Packaging:In plastic bag per roll, standard size as below(Thickness×Width×Length)1 ...