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REFRIGERANT LINE HEATER, AIR CONDITIONING AND VENTILATION 55-172 O-RING AND PIPE SERVICE POINT . O-RING AND PIPE FITTING 1. The following o-rings and pipe fittings are used in this air conditioning system. 2.Ensure the correct size o-ring is installed as required during service of system. 3.Two types of pipe fittings are used in this air conditioning system. . 25DB167A 25DB168A |