Porosity in metal castings and powder metal parts can compromise performance, cause leaks, and lead to costly rework. Hernon’s advanced impregnation sealants for porous materials are engineered to seal internal micro-voids and surface porosity without altering part geometry or functionality.
Our impregnation resins for porosity sealing offer high penetration, excellent thermal and chemical resistance, and permanent sealing of leak paths. These solutions are ideal for a wide range of applications including die castings, sintered metals, and additively manufactured components.
Trusted by automotive, aerospace, and industrial manufacturers around the world, Hernon’s impregnation sealants increase production yield, reduce scrap rates, and extend the life and reliability of precision parts.
Benefits of Hernon Impregnation Resins:
Seals micro-porosity and internal voids in metal parts
Compatible with vacuum and pressure impregnation systems
Resistant to oils, fuels, solvents, and high temperatures
Maintains part integrity and dimensional accuracy
Improve part performance and protect against leaks.
Porosity Sealant (HPS) 41814 is the solution to leak proof parts, improving machinability, in addition to increasing the durability and surface quality for painting and plating. The hardened resins exhibit superior chemical resistance and elevated temperature stability. The microscopic voids, where potential leaks occur (between metal grains or ceramic plastic molecules) in the part are filled by the low viscosity resin during vacuum application. Sealed micropores cure without shrinkage when exposed to elevated temperature to form tough cross-linked thermoset polymer, permanently sealing the workpiece. Residual adhesive film is water-washed from the part surfaces during rinsing. The parts leave the impregnating process without surface residue and can then be used in production immediately. When used in preparation for plating or painting processes, the impregnation process also eliminates absorption of plating materials (like acids) or painting prep solvents that could otherwise later bleed out of pores causing finishes to discolor, bleed, pit or peel. Sealed powdered metal parts exhibit better machinability, enhanced tool life and better dimensional control.
This website uses cookies and similar technologies to operate our site and services, optimize the website, monitor sessions, enhance your experience, and for marketing. These technologies may monitor your use of the site and share that information with third parties, including for analytics, social media, and advertising purposes. For more info, including on data retention, see the privacy notices linked below. Click “Cookie Settings” to opt-out of certain advertising cookies. By accessing or using the website, you agree to the use of cookies to collect and share your information, and to our Terms of Use (including arbitration & class waiver terms), Privacy Policy
