Please call
for help selecting
Hernon vacuum impregnation adhesives and porosity sealants

Hernon
Vacuum Impregnation Adhesives Systems
Internal Porosity Sealants

Hernon Porosity Sealant' HPS TM is the solution to leak proofing of parts. HPS offers improved machinability and surface quality for painting and plating. The hardened resins exhibit superior chemical resistance and elevated temperature stability.

The microscopic voids in the parts where potential leaks occur are filled by the low viscosity resin and sealed permanently. The parts leave the impregnating process without surface residue and can then be used in production. 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 later bleed out of the pores causing finishes to discolor, blister, pit or peel.

Porosity problems cause castings, powder metal parts, plastics, ceramics and other porous substrates to leak through the body. Production management is challenged to solve this problem due to increased production demands, soaring scrap costs as well as quality control.

Inherently, powdered metal parts have high percentages of voids. After sintering and loss of the wax binders, impregnation improves the machinability of sintered parts. HPS promotes consistent, rather than intermittent, tool contact on the filled surfaces. Less shock translates into greater tool life and better dimensional control on impregnated parts.

Hernon Porosity Sealant (TM) systems offer superior stability and predictability during the impregnation process. Comparison to "classic" sealing materials like sodium silicate show the clear performance superiority of HPS (TM) impregnation. Full and complete sealing, without limitations, is the norm.

SELECTION GUIDE
Sealant Grade No.
Military Approval

- 990 -
MIL-I-17563C, Class 4
Anaerobic System

- 991 -
MII,I-17563C, Class 1 and Class 3
Heat Cure System

Typical Applications:
Pneumatic tool castings, Automotive carburetors, Engine blocks, Water and fuel pumps, Plastic molds, Valves, manifolds, Railway, truck brake parts, Hydraulic pumps, Steering-gear components, Compressor parts, Powdered metal gun parts, Regulators