Refrigerant Circuit Seals
- Always use O-rings only once, replace.
- Coat the O-ring seals with refrigerant oil before inserting.
- Make sure O-rings are seated properly on pipe or in groove.
- 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 seal.
In addition to the color-coded O-ring seals, use is also made at the factory of black O-ring seals for certain connections.