4289-05 Nu-calgon Nu-Lock Refrigerant Thread Sealant,

Nu-Lock Refrigerant Thread Sealant, .34fl oz. Ideal for flare fitting sealing/locking duty in refrig. systems due to max chemicasl resistance and higher strength. Also suitabler for metal pipe thread fittings, bolt/nut, screw and stud fastener applications where added strength is desired. Similar to Locktite 554. ***Discontinued 4/09/24***