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Choose the right potting compound! Learn about key properties, shelf life, balancing needs & industry standards. Key Polymer’s elastomeric compound resists cracking & shrinking.

Key Polymer’s Tough-Seal shields electronics from shocks, moisture, harsh temperatures & more. It even cures underwater & offers EMI protection. Learn more about safeguarding your electronics.

Key Polymer’s Tough-Seal potting compound tackles common issues like cracking, vibration damage & heat buildup. Their focus: customer needs & industry standards.

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TOUGH-SEAL™ ULTRA 60 is a tough and durable longer working time low viscosity potting compound and sealant that flows like maple syrup around electrical components to ensure complete coverage of your entire PCB or electronic assembly. Bulldog tough to endure over 2000 hours of rigorous reliability testing at 85C/85%, TOUGH-SEAL™ ULTRA, without any signs of […]

See which Tough-Seal products work best for your application.

Tough-Seal is the KEY material for the electronic encapsulation of sensitive electrical components requiring premium thermal cycling performance.

All the Tough-Seals cure to completion at ambient temperatures. Tough-Seal 21 and 31 are designed to have faster initial gelation times than Tough-Seal 22 and 32.

Wherever working conditions are harshest, the Tough-Seal line stands up to punishment that causes other encapsulants to fail.