A/C Coupler O-ring: Description and Operation

O-rings







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

Use only new red or green O-rings which are compatible with R-134a refrigerant and refrigerant (PAG) oil.

Always use correct size 0-rings (dimensions -a- and -b-).

Note:
- Do not reuse O-rings, always replace.
- Lubricate O-rings with refrigerant oil before installing.