Browse Standards AS568A
Historical REAFFIRMED 1995-05-01

Aerospace Size Standard for O-Rings AS568A

The purpose of this Aerospace Standard (AS) is to set forth a standardized dash numbering system for O-Rings. It is intended to be used in the preparation of Company, Military, or other Standard Drawings for O-Rings.Each dash number, which should be appended to an appropriate Drawing or Standard number, identifies on nominal size O-Ring only. No attempt is made in this AS to indicate which of th eO-Ring sizes listed under this system should be included in any particular Standard Drawing. Its only purpose is to standardize O-Ring sizes and dimensional tolerances and the means of identifying them dimensionally.
AS568E
2020-03-02
Latest
Revised
AS568D
2014-03-11
Historical
Revised
AS568C
2008-12-03
Historical
Revised
AS568B
2001-03-01
Historical
Revised
AS568A
1995-05-01
Historical
Reaffirmed
AS568
1971-07-30
Historical
Issued

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