Which Tough-Seal is Right for You?

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.

Tough-Seal Evaluation Kit

Learn More About Each Tough-Seal Formulation

Compare Tough-Seal Formulations

Tough-Seal is the KEY potting compound that performs under the most aggressive conditions. Tough-Seal offers a unique combination of properties not commonly found in just one potting compound. Compare the KEY properites of all four Tough-Seal formulations side-by-side.
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Tough-Seal 21

Fast gelling
Medium viscosity
225% elongation
Shore Hardness: 64A
Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
Applications include: safety signal lighting, LED lighting, automotive sensors, wire harness assemblies, Printed Circuit Board Assembly

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Tough-Seal 22

Long working time
Medium viscosity
225% elongation
Shore Hardness: 68A
Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
Applications include: safety signal lighting, LED lighting, automotive sensors, wire harness assemblies, Printed Circuit Board Assembly

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Tough-Seal 23

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

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Tough-Seal 24

Long working time
High viscosity
225% elongation
Shore Hardness: 64A
Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
Applications include: advanced fire detection systems, gas sensors, high performance RF sensors, aviation lighting , marine lighting, LED lighting

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Tough-Seal 31

Fast gelling
Low viscosity
400% elongation
Shore Hardness: 37A
Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
Applications include: automotive and marine sensors, thermistor sensors, wire harness assemblies, underwater lighting, highly engineered motor and control systems

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Tough-Seal 32

Long working time
Low viscosity
450% elongation
Shore Hardness: 40A
Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
Applications include: helideck lighting, electronic sensors, LED Lighting, automotive sensors, marine lighting

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Tough-Seal 41

UL94 V-0
Fast gelling
Medium viscosity
200% elongation
Shore Hardness: 65A
Excellent Thermal Cycling Stability from -40°F (-40°C) to 212°F (100°C)
Applications include: automotive LED lighting, automotive sensors and high bay LED lighting

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