PIPESEAL is an epoxy paste designed to quickly seal cracks, holes, and leaks in pipes made of materials like copper, steel, lead, and cast iron. It hardens within 5 minutes when applied and heated with a heat gun. PIPESEAL is 100% solids with no VOCs, making it environmentally friendly. It can seal leaks up to 1/2 inch in diameter and withstand pressures over 1200 psi. To use, the resin and hardener must be thoroughly mixed together and applied to the leak, then heated to cure fully within minutes.