Foam Sealant Quantity Calculator

Foam Sealant (FST) Quantity Calculation Page

The FST calculator estimates the amount of two-part foam sealant required to seal a conduit or multiple conduits. The calculator provides an estimated product quantity that is based on average usage and waste.

The Polywater FST Foam Sealant Kit

FST-250KIT1 components

Polywater FST Foam Sealant injecting into a duct

FST-250 recommended for conduits larger than 2 inches (51 mm)

Polywater FST MINI injecting into a orange communications duct

FST-MINI recommended for conduits smaller than 2 inches (51 mm)

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If you have any questions on FST Foam Sealant or duct sealing, please ask using the button below. We will be happy to help you.

Duct Sealing Questions?

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FST comes in multiple, convenient package sizes. For questions about packaging or help planning your project, talk to our support team

FST installation instructions

FST-MINI installation instructions