SEALPACK NON-ASBESTOS SEALPACK Gaskets made of graphite. Available in sheets of - Pure graphite, Graphite sheets with stainless steel cut according to the size of the pipe flange standard ANSI, JIS, DIN. Temperature Range : -200 ºC to 3300 ºC Non – Oxidizing -200 ºC to 500ºC Oxidizing -200 ºC to 650 ºC Steam Pressure : 140 bar, 220 bar Chemical Resistance : pH 0-14 except oleum, fuming nitric acid, aqua regia.