SAE Standards Works
A-6C2 Seals Committee
AS568D - Aerospace Size Standard for O-rings
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Ronald E. Zielinski
Aerospace Size Standard for O-rings
This SAE Aerospace Standard (AS) specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The dimensions and tolerances specified in this standard are suitable for any elastomeric material provided that suitable tooling is available.
The drawing has been revised to eliminate the parting line projection shown in earlier issues since it is not applicable to an O-ring size standard.