Product Detail

Advanced Adhesives and Product Details

Our technical specifications, similar products and dispensing equipment for this product are listed below. If you have still have questions about the technical characteristics of this product, Hernon Manufacturing gives you the unique opportunity to talk to one of our product engineers. You can also print out a convenient, easy-to-share product package by clicking on the link "Print Product Presentation."

Tuffbond 394

Get a Sample! Talk TO an Engineer!



Hernon Tuffbond 394 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 394 will change from amber-yellow to a reddish brown upon cure. Bonding the voice coil to the cone has been a challenge for engineers, specifically when the adhesive temperature resistance requirement is above 200ºF (93ºC). Two component epoxy was commonly used for this application, but limitations such as mixing ratio, cure speed, potential solidification in equipment and the need for equipment flushing solvents have made Tuffbond 394 more practical.


Aerospace, aviation, automotive, electrical, electronics, appliance, defense, ammunition, marine, engineered plastics, heavy equipment, maintenance, energy and utilities, industrial assemblies, medical device assemblies, composites.