ISO 16031-1:2002
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Aerospace fluid systems -- O-rings, inch series: Inside diameters and cross sections, tolerances and size-identification codes -- Part 1: Close tolerances for hydraulic systems

This standard was last reviewed and confirmed* in 2013.

*Therefore this version remains current


ISO 16031-1 specifies the inside diameters, cross-sections, tolerances and size identification codes for inch O-rings used in aerospace fluid systems.

The dimensions and high precision tolerances specified in ISO 16031-1 are suitable for nitrile and ethylene propylene materials intended for use in high pressure hydraulic fluid systems provided that suitable tooling be available.


  • Document published on: 2002-06-15
    Edition: 1 (Monolingual) ICS: 49.080
    Status: Published Stage: 90.93 (2013-01-15)
    TC/SC: ISO/TC 20/SC 10 Number of Pages: 15
  • This standard has not been revised

  • No corrigenda or amendments available

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