ISO-MF and ISO-BF Vacuum Flanges
ISO vacuum flanges are offered in ISO-MF multi-fastener flange or ISO-BF bolted flange styles. ISO-MF flanges are offered in NW63 to NW500 sizes and are joined using a centering ring and ISO flange clamp. ISO-BF flanges are offered in NW63 to NW630 flange sizes and are joined using bolts. ISO flanges are "sexless" with the seal on a symmetrical centering ring that interfaces two identical ISO flanges.