A/C Coupler O-ring: Service and Repair

O-rings







O-rings seal connections between A/C system components.


NOTES:
- Always use correct size O-ring (dimensions -a- and -b-).
- Do not reuse O-ring, always replace. Use only new O-rings that are compatible with R-134a refrigerant and refrigerant (PAG) oil on R-134a systems.
- Lubricate O-ring with the appropriate refrigerant oil before installing (use PAG oil on R-134a systems).