---
product_id: 71723837
title: "FST-250KIT Polyurethane Foam Duct Sealant Kit 8.5 oz Cartridge Amber Resin Clear Curing Agent"
brand: "american polywater"
price: "VT55584"
currency: VUV
in_stock: true
category: "American Polywater"
url: https://www.desertcart.vu/products/71723837-fst-250kit-polyurethane-foam-duct-sealant-kit-8-5-oz
store_origin: VU
region: Vanuatu
---

# 8.5 oz compact cartridge for easy handling Seals up to 5 conduits simultaneously Proudly made in the USA FST-250KIT Polyurethane Foam Duct Sealant Kit 8.5 oz Cartridge Amber Resin Clear Curing Agent

**Brand:** american polywater
**Price:** VT55584
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, seal fast—join the pros who never compromise!

## Quick Answers

- **What is this?** FST-250KIT Polyurethane Foam Duct Sealant Kit 8.5 oz Cartridge Amber Resin Clear Curing Agent by american polywater
- **How much does it cost?** VT55584 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/71723837-fst-250kit-polyurethane-foam-duct-sealant-kit-8-5-oz)

## Best For

- american polywater enthusiasts

## Why This Product

- Trusted american polywater brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Power:** 8.5 oz cartridge designed for easy, mess-free application on the job.
- • **Clear Amber Resin:** Professional-grade dual-color formula ensures perfect curing visibility.
- • **Multi-Conduit Mastery:** Seal five 2-inch conduits in one go—efficiency meets precision.
- • **Re-Enterable Convenience:** Access and reseal conduits without hassle—future-proof your installations.
- • **Durable Polyurethane Foam:** Long-lasting, flexible sealant that adapts to your toughest duct sealing needs.

## Overview

The FST-250KIT by American Polywater is a compact, 8.5 oz polyurethane foam duct sealant kit designed to seal up to five 2-inch conduits simultaneously. Featuring a clear amber resin curing agent, this re-enterable kit offers durable, flexible sealing with easy application, proudly made in the USA for professional-grade performance.

## Description

Polywater FST Duct Sealant is used to protect mission-critical electrical and telecommunication systems from water, gases, and other unwelcome intrusions. The closed-cell, foaming caulk technology evenly flows around cables and in conduit space to create a strong bond. The electrical conduit sealant expands and completely cures into a rigid, robust seal without relying on environmental moisture.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008KNSLZA |
| Best Sellers Rank | #139,438 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #135 in Industrial Joint Sealants |
| Brand | American Polywater |
| Color | Amber, Clear |
| Date First Available | April 10, 2015 |
| Global Trade Identification Number | 00027868045714 |
| Is Discontinued By Manufacturer | No |
| Item Form | Foam |
| Item Weight | 8.5 ounces |
| Item model number | FST-250KIT |
| Manufacturer | American Polywater |
| Material | Polyurethane Foam |
| Number of Items | 1 |
| Package Dimensions | 12.44 x 9.45 x 4.29 inches |
| Style | Compact |
| Surface Recommendation | Conduits and Ducts |
| UPC | 027868045714 |
| Unit Count | 1.00 Count |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** American Polywater
- **Item Weight:** 8.5 Ounces
- **Material:** Polyurethane Foam
- **Style:** Compact
- **Water Resistance Level:** Water Resistant

## Images

![FST-250KIT Polyurethane Foam Duct Sealant Kit 8.5 oz Cartridge Amber Resin Clear Curing Agent - Image 1](https://m.media-amazon.com/images/I/61HXxneAARL.jpg)

## Questions & Answers

**Q: Do you need a specific caulking gun?**
A: No, I used a normal caulking gun which I had at home which I use to caulk windows and doors.

## Frequently Bought Together

- American Polywater FST-250KIT Polyurethane Foam Duct Sealant Kit 8.5 oz Cartridge Amber Resin Clear Curing Agent
- Red Devil 3989 9" Extreme Duty Caulk Gun - Hand Caulking Gun - Thrust Ratio 26:1,Black

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**Shop now:** [https://www.desertcart.vu/products/71723837-fst-250kit-polyurethane-foam-duct-sealant-kit-8-5-oz](https://www.desertcart.vu/products/71723837-fst-250kit-polyurethane-foam-duct-sealant-kit-8-5-oz)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-07*