TOUGH-SEAL™ ULTRA 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. TOUGH-SEAL™ ULTRA 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™ ULTRA grips in the cold, when other potting compounds contract, and maintains a tough seal in the heat, when other potting compounds wilt. TOUGH-SEAL™ ULTRA does not crack, so electronic components remain protected from moisture. When exposed to moisture, TOUGH-SEAL™ ULTRA also offers Anti-Microbial protection. TOUGH-SEAL™ ULTRA 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, TOUGH-SEAL™ ULTRA is gentler on sensitive circuitry, than hard epoxies, delivering low embedment stress upon cure and during thermal cycling.
TOUGH-SEAL™ ULTRA provides durable encapsulating protection that guards electrical components from exposure to the harmful effects of the environment better than typical epoxies, urethanes and silicones.