Aerospace Size Standard for Oversize O-Rings
AS5798A
This SAE Aerospace Standard (AS) specifies the dimensions, tolerances and size codes (dash numbers) for O-rings with a larger cross-section than those to AS568, for use in glands per MIL-G-5514 where squeeze at low temperature is often insufficient to provide a leak-tight seal.
Rationale:
AS5798 has been revised to include additional gland specifications and their limitations. Minor errors have been corrected, and Appendix A, which includes additional information, has been added.