Stainless Steel ISO-K Weld Flanges

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.

Flange Size Bore Dim A Dim B Nominal Tube O.D.
ISO63 73 76 6.4 76
ISO80 86 89 6.4 89
ISO100 105 108 6.4 108
ISO160 156 159 6.4 159
ISO200 216 219 6.4 219
ISO250 264 267 6.4 267
ISO320 319.5 324 9.5 324
ISO400 401 406 9.5 406
ISO500 503 508 9.5 508
ISO630 655.5 660 12.7 660

 

DATA | /gallery_1/rozmery_iso_komponentu | ISO-K_Weld_Flanges.jpg