Tough-Seal Potting Compound

Tough-Seal is a superior family of KEY sealants for potting electrical and electronic components that provides a reliable grip and exceptional encapsulating protection for any potting application where premium thermal cycling performance, excellent thermal shock resistance, and outstanding environmental and corrosion protection are a must.

Tough-Seal is available in six formulations that vary in gel time, viscosity, and hardness. From our self-leveling and medium viscosity formulations, to our glob-top formulation for localized potting, to our new UL 94 V-0 Listed formulation, Tough-Seal fits a wide variety of potting and encapsulating applications.

Tough-Seal is bulldog tough and bred to grip and protect, under the most aggressive conditions!

ToughSeal vs. Other Potting Compounds

Tough-Seal is a RoHS Compliant, easy-to-mix, two component durable hybrid epoxy elastomer that offers a unique combination of KEY properties not commonly found in just one potting compound. It offers the heat resistance of an epoxy, the flexibility of a urethane and the durable encapsulating protection of a silicone. ToughSeal is not a urethane, so it is isocyanate-free and it is not moisture sensitive.

With exceptional flexibility at temperatures as low as -103°F (-75°C) and high temperature resistance up to 302°F (150°C). Tough-Seal grips in the cold, when other potting compounds contract, and maintains a tough seal in the heat, when other potting compounds wilt. Tough-Seal does not crack, so electronic components remain protected from moisture. When exposed to moisure, Tough-Seal also offers Anti-Microbial protection. Tough-Seal does not support fungal growth and meets the requirements of MIL-STD-810G Method 508.6.

With very low exotherm in large volume pours, extremely low shrinkage, and little to no expansion or contraction with temperature changes, ToughSeal is gentler on sensitive circuitry, than hard epoxies, delivering low embedment stress upon cure and during thermal cycling.

Tough-Seal provides durable encapsulating protection that guards electrical components from exposure to the harmful effects of the environment better than typical epoxies, urethanes and silicones.