Refrigerant Circuit O-Rings

Refrigerant Circuit O-rings

• 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 work free of contamination (even the smallest deposit, such as, a hair, may lead to a leak).

• Install only O-rings that are resistant to refrigerant R134a and corresponding refrigerant oil. The O-rings are color-coded to avoid mistakes (currently red, light purple and dark purple). Refer to the Electronic Parts Catalog.






• The O-ring dimensions - a - and - b - are different depending on installation location. Refer to the Electronic Parts Catalog.

• In addition to the color-coded O-ring seals, use is also made at the factory of black O-ring seals for certain connections.