ISO-F Blank Flanges (304L SS) The ISO flange (also called Large ISO) is used for HV chamber ports and is available in two distinct styles; ISO-K which uses clamp fasteners and ISO-F which uses nut and bolt fasteners. A variety of bolt/clamp options permit joints between mixed ISO-K and -F flanges. The design principles of ISO and KF seals are identical. Each flange face is counter-bored or grooved to receive a metal centering ring with an elastomeric o-ring around its O.D. As with KF, the ISO centering ring both aligns the flanges and holds the o-ring in place. ISO flanges are limited (by the o-ring's properties) to applications with temperatures between ~0° C and 120–180° C, and pressure from atmosphere to ~10-8 torr or mbar. NOTE: These flanges are identical to the ISO NW flange standard. While these flanges are compatible with those made by European manufacturers, the tube diameter listed is in inches. Flange Size | Nominal Tube O.D. | Weight lbs (kg) | PartNo | Price | | | | ISO63 | 2.5" | 4 (1.81) | QF63-BF | $86.00 | | | | ISO80 | 3" | 4 (1.81) | QF80-BF | $93.00 | | | | ISO100 | 4" | 4 (1.81) | QF100-BF | $131.00 | | | | ISO160 | 6" | 11 (4.98) | QF160-BF | $200.00 | | | | ISO200 | 8" | 18 (8.16) | QF200-BF | $235.00 | | | | ISO250 | 10" | 25 (11.33) | QF250-BF | $370.00 | | | | ISO320 | 12.75" | 50 (22.67) | QF320-BF | $735.00 | | | | ISO400 | 16" | 75 (34.01) | QF400-BF | $1,020.00 | | | | ISO500 | 20" | 95 (43.09) | QF500-BF | $2,060.00 | | | | ISO630 | 26" | 130 (58.96) | QF630-BF | $2,030.00 | | |
PN02577 |