3in 1500Lb SS316 Graphite Filled Spiral Wound Gasket 3in 1500Lb SS316 Graphite Filled Spiral Wound Gasketapplied to pipe connections with premium stainless steel.We have succeed to cooperated with SHELL, LUKOILand other famous oil &gas companies with small order, best quality, reasonable price. 1.Technical Parameters 1.Name:Spiralwound gaskets 2. Type Type Thickness(mm) Basic form 3.2 4.5 With inner ring 4.5 With outer ring 4.5 With inner and outer ring 4.5 3. Structure type: Filler Hoop Inner ring Outer ring Asbestos SUS304 Carbonsteel Carbonsteel Graphite SUS316 SUS304 SUS304