ISO 1609:2020

Vacuum technology — Dimensions of non-knife edge flanges ISO 1609:2020

General information

60.60 Standard published   Jan 10, 2020


ISO/TC 112 Vacuum technology

International Standard

23.160   Vacuum technology


This document specifies the dimensions of non-knife-edge flanges and collars used in vacuum technology.
The dimensions ensure interchangeability between bolted, clamped and rotatable flanges:
a) whether the assembly be homogeneous (for example, bolted flanges or clamped flanges) or heterogeneous (for example, bolted flanges assembled with clamped flanges either by means of bolts or clamps or by means of bolts and rotatable flanges).
b) whether the sealing rings used with the flanges be elastomer O-rings or metal sealing rings, provided that they are compatible with the linear sealing loads given in Annex A.

Life cycle


ISO 1609:1986


ISO 1609:2020
60.60 Standard published
Jan 10, 2020