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 communications duct

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

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Questions?

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?

Ready to Install?

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