ISO-K Blank Flanges (Aluminum) 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" | 1/2 (0.22) | QF63-ABK | $41.20 | | | | ISO100 | 4" | 1 (0.45) | QF100-ABK | $62.00 | | | | ISO200 | 8" | 4 (1.81) | QF200-ABK | $134.00 | | | | ISO320 | 12.75" | 15 (6.8) | QF320-ABK | $325.00 | | | | ISO500 | 20" | 34 (15.42) | QF500-ABK | $590.00 | | | | ISO80 | 3" | 1/2 (0.22) | QF80-ABK | $54.00 | | | | ISO160 | 6" | 2-1/2 (1.13) | QF160-ABK | $103.00 | | | | ISO250 | 10" | 6 (2.72) | QF250-ABK | $170.00 | | | | ISO400 | 16" | 23 (10.43) | QF400-ABK | $400.00 | | | | ISO630 | 26" | 40 (18.14) | QF630-ABK | $1,600.00 | | |
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