Flange Mounting Kit Flange Material Steel Flange Material Finish Zinc-Plated Flange SAE Code 62 Maximum Operating Pressure 6 000 psi Nominal Flange Size 1 in O-Ring Material Buna-N Fastener Material Steel Includes (2) FC3425-16-449 Flange Halves (4) 210104-7S Lock Washers (4) FF9442-0728-94 Bolts FF9446-219 O-Ring