... alternating temperature or pressure such as the static sealing at flanges of pipeline, valves, pumps, heat exchangers, columns, manhole ... .8mm or as requirement drawing makingMaterial Steel tape/ SS304, ss304L ,316, 316L, ss31803, inconel , monel,SS32205,Hastelloy, Ti, Alloy ... Inner ring and outer ring/Q235, SS304 , ss304L ,316, 316L, ss31803, inconel , Monel,SS32205,Hastelloy,alloy ,ss321, Ti ...