Refrigerant Circuit Components: O-Ring

• All components of the refrigerant circuit submitted for quality observation are always to be sealed (use original sealing caps of original part).
• Replace damaged or leaking components of refrigerant circuit. Refer to COMPONENTS, REPLACING .
• To date, the original parts (compressor, reservoir, receiver/dryer, evaporator and condenser) have been filled with nitrogen gas. This charge is being gradually discontinued. There is little or no pressure equalization when removing the sealing plugs from the original part.

These O-rings seal off the connection points between individual components of the refrigerant circuit.

Fig 1: Checking O-Ring Seal Diameters

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Only O-rings that are resistant to refrigerant R134a and the associated refrigerant oil may be used. Make sure they are original replacement parts.

Refer to the Parts Information.

O-ring:

• Always use only once.
• Make sure diameters -a and b- are correct.
• Coat with refrigerant oil before installing.