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.

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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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Tough-Seal 42

• UL94 V-0
• Long working time
• Medium viscosity
• 200% elongation
• Shore Hardness: 87A
• Excellent Thermal Cycling Stability from -40°F (-40°C) to 302°F (150°C)
• Applications include: automotive LED lighting, automotive sensors

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