Metal serrated gasket (corrugated gasket) kammprofile gasket /cammprofile gasket Type: :1>basic type: just a flat ring, 2>outer cicle type :with oter cicle, 3>Dismantle outer cicle type, the outer circle can be take off. Material:Metal material: soft iron, stainless as 304,316,410,304L,316L ,Ni, Monel, Inconel, Brass, Hastelloy ,Sealing material: flexible graphite,ptfe,noasbestos, Eptfe, silver. Usage:For static sealing in flange, valve , joint of pipeline, container, high pressure vessel ,industries equipment . General Size: DN 10-2000mm Standard: ASME, ASNI, API, JIS,JPI, EN, DIN We can make according to your need. Your specification is WELCOME.