- Fast gelling
- High viscosity
- 225% elongation
- Shore Hardness: 64A
- Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
- Applications include: airflow sensors, aviation lighting , marine lighting, LED lighting, RF Sensors
Tough-Seal 23 is a high viscosity, Glob Top material with a toothpaste like thickness. This allows for isolated or localized potting as well as perimeter damming of PCB’s and electronics not assembled in housings. Since sensitive components can be selectively potted, this is the perfect choice for radio frequency applications where RF signals cannot be interrupted.
Tough-Seal 23 has a 10-20 minute working time and a Shore Hardness of 64A, which is similar to the hardness of a car tire. Tough-Seal 23 reaches 94% of its full hardness after an overnight cure or with a heat cure of 1 hour at 80°C (176°F). Tough-Seal does not exotherm or shrink during curing, therefore there is no embedment stress induced on the electronic components that could cause damage and failure of the PCB or electronic assemblies. Sensitive electronics can be potted safely with low embedment stress Tough-Seal.
With a high elongation of 225% when fully cured, Tough-Seal 23 maintains exceptional flexibility and thermal cycling stability from –40°C to 150°C (-40°F to 302°F) without pulling back, wilting, or cracking. This ensures a tough seal that will stop moisture or other contaminants from damaging sensitive PCB’s and electronics.
Tough-Seal has very aggressive adhesion to aluminum, making it a perfect choice for potting aluminum housings. Tough-seal also bonds extremely well with most polymers. For housing and wire insulation materials that are exceptionally difficult to bond to, we offer our KEY PR1200 PRIMER, an aggressive adhesive promoter that is simple to use.
Color, Part A
Viscosity at 25°C, cP, Part A, (RVT #5, 20 RPM)
Specific Gravityat 25°C, Part A
Color, Part B
Viscosity at 25°C, cP, Part B, (RVT #5, 20 RPM)
Tough-Seal is a superior family of KEY sealants available in four standard formulations to fit a variety of potting applications. While all Tough-Seal formulations are durable hybrid epoxy elastomers that grip and protect under the most aggressive conditions, they are available in a combination of properties that vary in hardness, gel-time, working time, and flow.
Your Evaluation Kit will include everything you need to perform your own high quality product evaluation for your application.