... of multichannel sealing ,high temperature endurance, corrosion-resistantance and lower requirement of the coarseness of the flange sealing ... steem, hydrogen, natural gas, pyrolysis gas, and petrol products, acid, alkali,and salt solution,etc.Specification: SPIRAL WOUND GASKETJSD- ... CS plated zinc, stainless steel as ss304 3316,AS31803, alloy, and so on.Spiral material:A3 ,OCr13, 1Cr13, 1Cr18,Ni9, Ti , ...