Subscribe to updates

ISO 3601-4:2008

Fluid power systems -- O-rings -- Part 4: Anti-extrusion rings (back-up rings)

This standard has been reviewed and then confirmed in 2013 
More information

ISO standards are reviewed every five years


Media and price

Format Price Language
PDF CHF 58,00 Add to basket
Paper CHF 58,00 Add to basket



ISO 3601-4:2008 specifies dimensions and tolerances for five types of anti-extrusion rings, which are also known as back-up rings:

  1. spiral type (T1);
  2. angle cut type (T2);
  3. solid type (T3);
  4. angle cut concave type (T4);
  5. 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.


Preview and follow ISO 3601-4:2008 on our Online Browsing Platform


Contact customer services

Send your enquiry by email
or call us on +41 22 749 08 88
09:00 – 12:30, 14:00 – 17:00 (UTC+1).

Related standards

Standards in the same category (83.140.50)
Standards in the same category (23.100.60)
Standards from the same committee