SAE J515 hydraulic o-ring is prepared by the SAE fluid connector, connector technical committee- Automotive and hydraulic tube and fittings.
TABLE A1—DIMENSIONS OF O-RINGS FOR USE WITH SAE AND ISO HYDRAULIC FITTINGS AND STUD-ENDS BY SIZE CODE (H SERIES)
TABLE A2—DIMENSIONS OF O-RING SIZES SPECIFIED BY OUTSIDE DIAMETER FOR OPTIONAL USE WITH FACE SEAL FITTINGS BY SIZE CODE (Y SERIES)