Insta-Seal Gasket & Radiator Seal HG9048s (Pt.#HG9048S-11OZ) is rated by repair shops as the #1 SELLER currently on the Automotive Market today….. INSTA-SEAL mixes with all antifreeze-no need to drain cooling system before use & simply follow instructions. SEALS LEAKS IN ENGINE BLOCKS, CYLINDER HEADS, HEAD GASKETS, RADIATORS, FREEZE PLUGS and HEATER CORES. Insta-Seal Permanent Block Radiator Seal is compatible with all types of glycol-based coolants an antifreeze. Formulated with ceramic micro-fibers and copper fines of varying size to insure a fast, permanent seal of all holes or cracks in the cooling system. The ceramic micro-fibers and copper fines flow into cracks that are too small to be seen by the human eye to provide a permanent seal. The micro size ceramic fibers and copper fill the entire crack from top to bottom to form a complete “weld” within large and small cracks. The copper fines also conduct heat across the crack or hole, eliminating hot spots that normally form around the edges of a hole or crack. Expands and contracts with temperature changes and is designed to be used in all types of metal engines and radiators – such as cast iron, steel, aluminum, copper, and brass – and radiators with plastic tanks. Directions:- 1 Shake bottle and add to radiator or overflow tank. 2 Leak will stop within 1 to 3 minutes after engine reaches operation temperature. 3 Leave INSTA-SEAL in engine for future sealing.
