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Key Polymer, founded in 1959, manufactures a broad range of custom formulated and toll manufactured adhesives, coatings and other chemical compounds. Technologies include epoxy adhesives, wax butyl rubber blends, and epoxy or urethane potting & encapsulating products for industrial application. Since inception, Key Polymer has successfully partnered with customers to provide unique and responsive customer-specific materials solutions.

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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

Tough-Seal 22 A is a tough and durable two component, hybrid epoxy elastomer that features a longer gel time than Tough-Seal 21. Tough-Seal is a superior electrical potting compound with excellent thermal cycling performance.

Tough-Seal 22 A

Tough-Seal 21 A is a tough and durable two component, fast gelling, hybrid epoxy elastomer electrical potting compound with excellent thermal cycling performance. KEY Tough-Sealhas the flexibility of a urethane and the service temperature of an epoxy.

Tough-Seal 21 A

Tough-Seal 42 A is a flame retardant version of Tough-Seal 22. The self-extinguishing flame retardant performance meets UL 94V-0 requirements and has been validated by UL for the official rating. KEY Tough-Seal 42A/Bachieves flame retardant properties without antimony or halogenatedcompounds. Like Tough-Seal, it is a tough and durable two component, hybrid epoxy elastomer that features excellent thermal cycling and exceptional flexibility.

Tough-Seal 42 A

Tough-Seal 41 A is a flame retardant version of Tough-Seal 21. Self-extinguishing flame retardant performance has been validated by UL and KEY Tough-Seal 41A/Bhas achieved a UL94V-0 rating. KEY Tough-Seal 41A/Bachieves flame retardant properties without antimony and brominated compounds.

Tough-Seal 41 A

Tough-Seal 31 A is a tough and durable two component, hybrid epoxy elastomer that features a lower viscosity than Tough-Seal 21. Tough-Seal is a superior electrical potting compound with excellent thermal cycling performance. Tough-Seal has the flexibility of a urethane and the service temperature of an epoxy.

Tough-Seal 31 A

Tough-Seal 24 A a tough and durable two component, hybrid epoxy elastomer that features a higher viscosity than KEY Tough-Seal 22 to limit lateral flow in “glob top” encapsulation. KEY PC2024A/Bis a superior electrical potting compound with excellent thermal cycling performance.

Tough-Seal 24 A

Tough-Seal 23 A a tough and durable two component, hybrid epoxy elastomer that features a higher viscosity than KEY Tough-Seal 21 to limit lateral flow in “glob top” encapsulation. KEY PC2023A/Bis a superior electrical potting compound with excellent thermal cycling performance.

Tough-Seal 23 A

Tough-Seal 32 A is a tough and durable two component, hybrid epoxy elastomer that features a lower viscosity than Tough-Seal 22 and a longer gel time than Tough-Seal 31. Tough-Seal is a superior electrical potting compound with excellent thermal cycling performance. Tough-Seal has the flexibility of a urethane and the service temperature of an epoxy.

Tough-Seal 32 A

Key Polymer

Key Polymer, founded in 1959, manufactures a broad range of custom formulated and toll manufactured adhesives, coatings and other chemical compounds. Technologies include epoxy adhesives, wax butyl ru

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