Product: ASTM A182 F316 Spiral Wound Gasket Outer Ring Material: Carbon Steel Inner Ring Material: SS3316L+ Graphite Size: 12Inch Pressure: CL600 End: RF Flange Coating: As per client request Type: Inner RING, Outer Ring; Inner and Outer Ring etc. Standard:ASME B 16.20, BS EN 1092, DIN, JIS, and NF, etc