Before installation, verify that both O-rings and fittings have not been nicked or deformed. Deformed or nicked parts must be replaced.

Important: Failure to use the proper service replacement parts and procedures may result in excessive refrigerant leakage.

Important: Even though O-rings may look identical, it is extremely important that only recommended service replacement air conditioning O-rings be used, or excessive leakage of refrigerant may occur.

Important: Always slip the O-ring onto the flange tube to ensure proper locating and sealing.

Important: When replacing O-rings on an air conditioning component or a joint connection, the fitting design should be identified to ensure installation of the correct air conditioning service replacement O-ring.

Install new GM-approved service replacement air conditioning O-rings whenever a joint or a fitting is disassembled, except when the O-rings are provided on new components.