ISO Outer / Inner Centering Ring with O-Rings are available in the following sizes: ISO 63, ISO 80, ISO 100, ISO 160, ISO 200 and ISO 250. \n \nISO Outer / Inner Ring Centering Ring w/O-Ring is made of Aluminum, Stainless Steel, and Viton. \n \nISO Flange Series comprises two smooth face flanges clamped together with metal centering rings and elastomeric O-Rings. \n Parts No. Size A B C D E Material-C/R Material-O/R Material-O'Ring EV02025 ISO63 68 70 8 3.9 94 304 S.S. AI Viton EV02026 ISO80 81 82.6 8 3.9 109 304 S.S. Al Viton EV02027 ISO100 100 102 8 3.9 128 304 S.S. Al Viton EV02028 ISO160 148 153 8 3.9 179 304 S.S. Al Viton EV02078 ISO200 210 213 8 3.9 238 304 S.S. Al Viton EV02079 ISO250 257.5 261 8 3.9 287 304 S.S. Al Viton
