Product: CL900 Spiral Wound Gasket Outer Ring Material: Carbon Steel Inner Ring Material: SS316+ Graphite Size: 20 Inch Pressure: CL900 End: RTJ 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