---
product_id: 352099975
title: "Rubber Sealant Coating, Waterproof, Black, 320 oz | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry"
brand: "flex seal liquid"
price: "S$553"
currency: SGD
in_stock: true
category: "Flex Seal Liquid"
url: https://www.desertcart.sg/products/352099975-rubber-sealant-coating-waterproof-black-320-oz-stops-leaks-fast
store_origin: SG
region: Singapore
---

# UV resistant for long-lasting protection Waterproof liquid rubber sealant Flexible & breathable coating Rubber Sealant Coating, Waterproof, Black, 320 oz | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry

**Brand:** flex seal liquid
**Price:** S$553
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal it, shield it, and forget it — Flex Seal Liquid has you covered!

## Quick Answers

- **What is this?** Rubber Sealant Coating, Waterproof, Black, 320 oz | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry by flex seal liquid
- **How much does it cost?** S$553 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/352099975-rubber-sealant-coating-waterproof-black-320-oz-stops-leaks-fast)

## Best For

- flex seal liquid enthusiasts

## Why This Product

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

## Key Features

- • **Built to Brave the Elements:** UV resistant formula ensures your repairs stay strong and fade-free under the harshest sun.
- • **Max Coverage, Max Confidence:** Generous 2.5-gallon size delivers 320 fluid ounces of premium liquid rubber for big jobs or multiple fixes.
- • **Rust & Corrosion’s Worst Enemy:** Chemical resistant coating that prevents rust and extends the life of metal and masonry.
- • **Versatile Application Powerhouse:** Perfect for roofs, basements, RVs, campers, trailers, marine gear, and EPDM surfaces.
- • **Watertight Armor for Your Surfaces:** Brush, roll, dip, or pour on a seamless rubber barrier that locks out water, air, and moisture.

## Overview

Flex Seal Liquid is a premium 2.5-gallon liquid rubber coating designed for waterproofing and protecting a wide range of surfaces. Its flexible, breathable, and UV resistant formula creates a durable barrier against water, air, rust, and corrosion. Ideal for roof repairs, basements, RVs, marine applications, and more, this versatile sealant applies smoothly by brushing, rolling, dipping, or pouring, ensuring fast coverage and long-lasting protection.

## Description

Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon: desertcart.com: Tools & Home Improvement

## Features

- Flex Seal Liquid is liquid rubber in a can! Now you can brush, roll, dip or pour it on!
- Use anywhere you need a watertight, flexible rubberized coating
- Goes on smooth and covers fast, sealing out water, air and moisture
- UV Resistant
- Prevents rust and corrosion. Chemical resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0916RKHLH |
| Best Sellers Rank | #205,787 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #637 in Hardware Sealers |
| Brand Name | Flex Seal Liquid |
| Color | Black |
| Compatible Material | Rubber |
| Customer Reviews | 4.3 4.3 out of 5 stars (119) |
| Global Trade Identification Number | 00850017897434 |
| Included Components | Item |
| Item Dimensions | 10.5 x 10 x 10 inches |
| Item Form | Liquid |
| Item Type Name | Flex Liquid MAX Black 2.5 Gallons |
| Item Weight | 20 pounds |
| Manufacturer | Swift Response, LLC |
| Material Type | Rubber |
| Model | LFSMAXBLK02 |
| Number of Items | 1 |
| Part Number | LFSMAXBLK02 |
| Style Name | Liquid Rubber |
| Surface Recommendation | Roof |
| UPC | 850017897434 |
| Unit Count | 320 Fluid Ounces |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item Weight:** 20 pounds
- **Item dimensions L x W x H:** 10.5 x 10 x 10 inches
- **Material:** Rubber
- **Style:** Liquid Rubber

## Images

![Rubber Sealant Coating, Waterproof, Black, 320 oz | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry - Image 1](https://m.media-amazon.com/images/I/81FkXWgrqlL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Frequently Bought Together

- Flex Seal Liquid MAX, 2.5 Gallon, Black, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows
- Flex Tape, MAX, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof and Pool Repairs, Black, 4 in x 25 ft, Pack of 1

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**Shop now:** [https://www.desertcart.sg/products/352099975-rubber-sealant-coating-waterproof-black-320-oz-stops-leaks-fast](https://www.desertcart.sg/products/352099975-rubber-sealant-coating-waterproof-black-320-oz-stops-leaks-fast)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-09-01*