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](https://www.polywater.com/wp-content/uploads/2020/12/FST-250-KIT-FST-calc-page.jpg)
FST-250KIT1 components
![Polywater FST Foam Sealant injecting into a duct](https://www.polywater.com/wp-content/uploads/2020/12/FST-250-action-FST-calc-page.jpg)
FST-250 recommended for conduits larger than 2 inches (51 mm)
![Polywater FST MINI injecting into a orange communications duct](https://www.polywater.com/wp-content/uploads/2020/12/FST-mini-FST-Calc-page.jpg)
FST-MINI recommended for conduits smaller than 2 inches (51 mm)
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Ready to Install?
FST comes in multiple, convenient package sizes. For questions about packaging or help planning your project, talk to our support team