FeaturesMechanical adapter with internal threads to mate with NPT threaded fittings and MS type connectorsWhen used with an externally threaded fitting provides a tight seal against oil, fumes or moisture at the knockout openingSteel retainer protects seal from extruding out under torque and limits compression to an optimum predetermined valueProvides high quality sealResilient material flows and seals rough surfacesThreaded fitting provides a tight seal against oilThread to metric24, 28 AN-MS fitting shell