A/C Coupler O-ring: Service and Repair

Coat the A/C O-rings with mineral base 525 viscosity refrigerant oil immediately prior to installation. Slip the O-rings onto the flange pipe in order to assure proper locating and sealing. In order to prevent the possibility of swelling and a reduction in the sealing effectiveness, do not soak the O-rings in the refrigerant oil. Examine the O-rings and the fittings before the installation in order to ensure that the O-rings and the fittings are not nicked or deformed. Replace any nicked or deformed parts in order to prevent refrigerant leakage.