---
product_id: 14093110
title: "304132 Flex-Grip 550 Water Based Duct Sealant - 1 Gallon"
brand: "hardcast"
price: "S$195"
currency: SGD
in_stock: true
category: "Hardcast"
url: https://www.desertcart.sg/products/14093110-304132-flex-grip-550-water-based-duct-sealant-1-gallon
store_origin: SG
region: Singapore
---

# Water-based formula for eco-friendly sealing 1 gallon, 7.5 lbs of durable sealant Compatible with fiberglass, metal & plastic 304132 Flex-Grip 550 Water Based Duct Sealant - 1 Gallon

**Brand:** hardcast
**Price:** S$195
**Availability:** ✅ In Stock

## Summary

> 💪 Seal smart, seal strong — the pro’s choice for duct perfection!

## Quick Answers

- **What is this?** 304132 Flex-Grip 550 Water Based Duct Sealant - 1 Gallon by hardcast
- **How much does it cost?** S$195 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/14093110-304132-flex-grip-550-water-based-duct-sealant-1-gallon)

## Best For

- hardcast enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Quality:** Hardcast brand with top-tier 5-star reviews—join the pros who rely on FLEX-GRIP 550
- • **Eco-smart Sealant:** Water-based, low VOC formula keeps your workspace safe and green
- • **Heavy-Duty Volume:** Generous 1-gallon pail ensures you’re stocked for any HVAC project
- • **Pro-Grade Durability:** Water-resistant and long-lasting to keep your ducts airtight and efficient
- • **Universal Compatibility:** Seals fiberglass, metal, and plastic ducts with ease—one product, endless uses

## Overview

The Hardcast FLEX-GRIP 550 is a 1-gallon, water-based duct sealant designed for professional HVAC applications. Compatible with fiberglass, metal, and plastic surfaces, it offers a durable, water-resistant seal that enhances duct efficiency. Lightweight yet heavy-duty, this eco-friendly sealant is highly rated for quality and reliability.

## Description

The item is FLEX-GRIP 550 WATER BASED DUCT - HARDCAST 304132, SEALANT 1-GAL PAIL GRAY with UPC: 638532800050. FLEX-GRIP 550 WATER BASED DUCT is manufactured by: HARDCAST. FLEX-GRIP 550 WATER BASED DUCT is a component that has the part number of: 304132. And weighs at around 12.00 lbs.

## Features

- HARDCAST 304132 FLEXGRIP 550 WATER BASED DUCT SEALANT 1GAL PAIL GRAY

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003PL7UK4 |
| Best Sellers Rank | #732,976 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,877 in Hardware Sealers |
| Brand Name | Hardcast |
| Color | gray |
| Compatible Material | Fiberglass, Metal, Plastic |
| Customer Reviews | 5.0 5.0 out of 5 stars (2) |
| Item Form | Liquid |
| Item Weight | 7.5 pounds |
| Manufacturer | Hardcast |
| Material Type | Hardcast |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 304132 |
| Style Name | Compact |
| Surface Recommendation | [Multiple] |
| UPC | 063853280005 |
| Unit Count | 1 Count |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Hardcast
- **Item Weight:** 7.5 pounds
- **Material:** Hardcast
- **Style:** Compact
- **Water Resistance Level:** Water Resistant

## Images

![304132 Flex-Grip 550 Water Based Duct Sealant - 1 Gallon - Image 1](https://m.media-amazon.com/images/I/31n7jdXswvL.jpg)

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**Shop now:** [https://www.desertcart.sg/products/14093110-304132-flex-grip-550-water-based-duct-sealant-1-gallon](https://www.desertcart.sg/products/14093110-304132-flex-grip-550-water-based-duct-sealant-1-gallon)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-10-21*