... : Metal tape + Expanded Graphite / PTFE Spiral wound metal gasket : Spiral wound gasket (basic type) is made by superposing, winding and welding V ... stainless steel, 304,304L,316,316L,321,Ta Mon400, Inconel, asbestos (graphite, PTFE, mica, ceramic) tape used for special-purposed equipments ... and EN(DIN) standards or client request. Spiral Wound Metal Gasket