1)made in any size from R11 to R105 2)various of materials following your request 3)standard:ASME B 16.20 /API 6A Ooctagonal Gasket(sealing,oil seal), which covered with anti-rust oil. They are used to withstand high pressure and temperatures and are employed where corrosive agents are present.These gaskets are manufacturedusing different solid metal typle like soft iron,ss304,ss316.and others

BEST RING JOINT GASKETS