HPS 990

Porosity Sealant (HPS) 990 is the ultimate leak path sealant for porosity, offering a reliable solution to leak-proof parts while enhancing machinability, durability, and surface quality for painting and plating. Ideal for sealing leak paths in rigid electronic assemblies, HPS 990 uses hardened resins that provide superior chemical resistance and elevated temperature stability. The low-viscosity resin fills microscopic voids where potential leaks occur, sealing gaps during vacuum application. These micropores cure without shrinkage, forming a tough, cross-linked thermoset polymer that permanently seals the piece. During rinsing, excess adhesive is washed away, leaving no surface residue and allowing parts to be used in production within hours. When used in plating or painting preparation, HPS 990 prevents absorption of plating materials (like acids) or painting prep solvents, eliminating the risk of finishes discoloring, bleeding, pitting, or peeling. Sealed powdered metal parts also exhibit improved machinability, enhanced tool life, and better dimensional control. Protect electrical components from leaks caused by air, water, coolants, and oils with this advanced leak path sealant for porosity.