Formulations

Hernon 397 is a single component, high temperature resistant, heat activated epoxy. It cures to a high-performance thermoset system with excellent adhesion properties to a wide variety of substrates. Tuffbond 397 will change from amber-yellow to a reddish brown upon cure. Product Benefits • High temperature resistance. • Single component (no mixing, no pot life). • Contains 150micron spacer beads for bond line control • Solventless. • Cures on demand (heat cure). • Will not slip during cure. • Changes color upon cure (yellow to brown). • Excellent adhesion to various substrates. • Gives high shear. • Low water absorption.

Hernon® Ultrabond® 750 is a UV curable adhesive that can be used to seal a variety of plastics when exposed to UV light. The sealant offers a water- tight seal with excellent environmental resistance. Prevents material escaping through a crimped seal. With Ultrabond 750 a low powered UV lamp (Blacklight), can be used to inspect for the presence of adhesive on the substrates. Product Benefits • UV fluorescence for in-process inspection •Cures well at 395nm •Flexible thermoset system • Excellent Water Resistance •Good adhesion to a variety of plastics • 100% solid system (no solvents) • Good gap filling properties • No shrinkage due to solvent evaporation • Rapid UV cure

Hernon® External Ammunition Sealant 76984 is a single component high strength U.V. anaerobic sealant. 76984 has a low viscosity penetrating material capable of bonding and sealing primers and case mouths in ammunition. This Sealant is specially formulated for Ammunition that needs greater fit tolerance and higher bullet pull forces. Curing occurs when the adhesive is applied between mating surfaces. The cured adhesive is a thermoset plastic and endures exposure to most solvents. Ammunition Sealant 76984 cures quickly at room temperature without the need for surface activators or heat to seal primer and case mouth assemblies. Fixturing strength develops in two to three minutes, Full strength will be reached in 24 hours. Cure fillets at UV light irradiances above 100 milliwatts/cm² to insure proper cure. Product Benefits • UV fluorescence for in-process inspection • 100% solid system (no solvents) • Excellent environmental resistance • Good gap filling properties • Excellent Bullet Pull strengths with low Standard deviation. • UV and anaerobic curing mechanism suitable for metal parts • Good capillary performance

Dissipator® 745 is a thermally conductive room temperature cure adhesive that is designed for bonding electrical components to heat sink with a controlled gap. Dissipator® 745, through a special shimming property, insulates the component electrically while allowing thermal conductivity. This special shimming feature produces a constant gap of 0.005 in. to 0.006 in. between components.

Hernon’s Bullet Tip ID Coating is the latest technology in ammunition identification, specifically formulated for using inkjet applications, offering advances in adhesion, scratch resistance, and superior print quality. This single-component, solvent-free, UV or LED-curable coating ensures fast curing time and cost-efficient processing, combining with Hernon patented dispensing technologies, making it the ideal solution for high-volume ammunition marking with simple operation.

Typical applications include:

• Ammunition identification and branding
• Military and commercial bullet marking
• High-speed production environments requiring rapid curing

Traditional paints (solvent-based or water-based) are being replaced by modern UV LED curable acrylates. Now the drying time is just a few seconds under UV LED light. Full cure will be reached in 24 hours.

Product Benefits

• Excellent adhesion to bullet tips
• Scratch-resistant for durability
• High-definition print quality and uniformity
• Solvent-free, environmentally friendly formulation
• Single-component system for easy application
• UV or LED cured for instant drying and rapid processing
• Available in multiple colors that matched to the Federal Standard 595C- or RAL for easy identification

External Ammunition Sealant 76021 is a single component U.V. anaerobic sealant.

Porosity Sealant (HPS) 991 is the solution to leak proof parts, improving machinability, in addition to increasing the durability and surface quality for painting and plating. The required addition of HPS Initiator 91 activates HPS 991R enabling the system to cure at elevated temperatures (HPS 991). 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.

Hernon Dissipator 746D is a thermally conductive adhesive formulated for bonding electrical components to heat sinks or printed circuit boards. Fast room temperature cure combined with excellent heat dissipation for thermally sensitive components and controlled strength for service repair provide perfect replacement for tapes, epoxies, silicones, fasteners and mechanical clips. Typical Applications Typical applications include bonding transformers, transistors and other heat generating electronic components to printed circuit board assemblies or heat sinks.

Hernon Dissipator 745D is a thermally conductive room temperature cure adhesive that is designed for bonding electrical components to heat sink with a controlled gap. Dissipator 745D, through a special shimming property, insulates the component electrically while allowing thermal conductivity. This special shimming feature produces a constant gap of 0.005 in. to 0.006 in. between components. Product Benefits • No mixing required (eliminates errors in mixing ratio) • Room temperature cure. No heat required. • Eliminates screws and rivets for assembly. • Eliminates the air space between components. • High k factor for heat conductive application

Hernon® HPS Activator 4322 is used to activate Hernon® Hernon Porosity Sealant (HPS) resins. HPS resins cures to form a thermoset polymer when exposed to elevated temperature. Thermal content and coefficient of thermal transfer in the workpieces influence the cure rate of the HPS system. Higher temperatures produce quicker cure rates. HPS resins generally cures within the range of 177°F (80°C) to 205°F (96°C). Proper cure requires the workpiece to uniformly attain full cure temperature. Parts that do not transfer heat well will required longer processing times. Efficient thermal conductivity yields shorter processing cycles. Parts with heavier cross sections require longer exposure at heat to attain sufficient temperature internally. Carefully consider part geometry. Consult Hernon® Technical Service for specific process requirements.

Hernon® 525 is a pre-applied, micro-encapsulated adhesive for threaded fasteners. Hernon® 525 stays on the bolt until the shearing action of an engaging nut applied to the coated bolt causes the capsules to break allowing the adhesive to cure. This material securely locks and seals against vibration loosening and fluid leakage. Typical Applications Locking & Sealing: • Head bolts • Truck Axle bolts • Transmission nuts • Pipe plugs and fittings Product Benefits • Improves reliability. • Prevents loosening of bolts due to vibration. • Seals against leakage. • Prevents threads from corroding. • Easily visible for inspection. • Pre-coated parts can be packaged and shipped in normal fashion. • Excellent solvent resistance. •Bonds to stainless steel bolts.