Refrigerant Circuit Seals
- Always use O-rings only once, replace.
- Coat the O-rings with refrigerant oil before installing.
- Make sure O-rings are seated properly on pipe or in groove.
- Check the connections on the components and refrigerant lines for damage (even a small scratch can lead to leakage).
- Perform the work under clean conditions (even the smallest deposit such as a hair may cause a leak).
NOTE:
Only O-rings, that are durable against refrigerant R134a and/or refrigerant R1234yf as well as the related refrigerant oil, may be installed. These O-rings can be color-coded to avoid confusion (for example, "red", "light purple" or "dark purple").
The dimensions -a and b- are different depending on the component location of the O-ring.
In addition to the color-coded O-rings, black O-rings are also installed at the factory for certain connections.