... , etc. 2. Petrochemical, chemical, mechanical manufacturer, power station, metallurgy, shipbuilding, medical and pharmaceutical unclear power station and navigation, etc. Spiral wound gaskets ... 400Nickel 200Inconel 600Incoloy 800Inroloy 825Hastalloy B2Hastalloy C276TitaniumAlloy 20 PTFE eflon graphite ss316 metal twisted spiral wound gaskets