7.6 x 2.5mm. A seal that Prevents oil from leaking out, or contaminants from enteRing the Air Conditioning Evaporator Core. A/C Expansion Valve O-Ring. A/C Line O-Ring. A/C Refrigerant Line O-Ring. Exc.Heat Pump. Part has related components that cannot be reused/reinstalled; seal and gasket. Part serviced with AC Line. Part serviced with housing. Included with: AC Hose, AC Line, AC Line Part cannot be reused/reinstalled, AC Tube, Blower case, Center AC Line Part cannot be reused/reinstalled, Cooling pipe, Discharge pipe Part cannot be reused/reinstalled, Front AC Line, Heat exchanger, Hose and Tube assembly, Housing, Liquid Line, Pressure Hose, Pressure Line, Rear AC Hose, Rear AC Line, Rear AC Line Part cannot be reused/reinstalled, Rear AC Tube Part cannot be reused/reinstalled, Rear pipe, Rear pipe assembly, Refrigerant Hose, Suction Line, Suction pipe, Tube assembly, Upper Pressure Line, Valve AC Line Part cannot be reused/reinstalled.