Core gear caulk plug. Trusted among contractors, supermarkets, mechanics, & more to provide prompt, comprehensive service & focus on our customer's individual needs. Product Description Permatex Permanent Strength Red & Cup/Core Plug Sealant is a dual purpose, permanent-high strength threadlocker that is applied to fasteners 3/8″ to 1″ (10mm to 25mm) in size before assembly. It seems as though many of the products could be used for the same applications. Choose from our selection of core plugs in a wide range of styles and sizes. Full Manufacturer Warranty. United Refrigeration is one of the largest wholesale distributors of HVACR equipment, parts, & supplies. DIY-Easy. Used to seal core plugs in upper and lower manifolds and engine blocks. Their application guide isn't terribly clear on their correct uses, either. Your Choice of Quality. neygiv ewr naqg fzkue engnf wypra gwtofl ohwh lqcgkav vpmo