90.93 Standard confirmed Dec 13, 2023
ISO
ISO/TC 131/SC 7 Sealing devices
International Standard
23.100.60 Filters, seals and contamination of fluids | 83.140.50 Seals
ISO 3601-4:2008 specifies dimensions and tolerances for five types of anti-extrusion rings, which are also known as back-up rings:
spiral type (T1);
angle cut type (T2);
solid type (T3);
angle cut concave type (T4);
solid concave type (T5).
These anti-extrusion rings are for use with selected O-ring sizes as specified in ISO 3601-1 and the relevant housing dimensions specified in ISO 3601-2.
PUBLISHED
ISO 3601-4:2008
90.93
Standard confirmed
Dec 13, 2023