---
product_id: 34430165
title: "Rubber Sealant Coating, Waterproof, Gray, 16 oz"
brand: "flex seal liquid"
price: "A$43"
currency: AUD
in_stock: true
reviews_count: 13
category: "Flex Seal Liquid"
url: https://www.desertcart.com.au/products/34430165-rubber-sealant-coating-waterproof-gray-16-oz
store_origin: AU
region: Australia
---

# 100% Waterproof Seal Flexible Rubberized Coating UV & Chemical Resistant Rubber Sealant Coating, Waterproof, Gray, 16 oz

**Brand:** flex seal liquid
**Price:** A$43
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it, protect it, flex it — the ultimate waterproof armor for your projects!

## Quick Answers

- **What is this?** Rubber Sealant Coating, Waterproof, Gray, 16 oz by flex seal liquid
- **How much does it cost?** A$43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/34430165-rubber-sealant-coating-waterproof-gray-16-oz)

## 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

- • **Flexible & Durable Seal:** Expands, contracts, and stretches with temperature changes to maintain a long-lasting, crack-free finish.
- • **Built to Endure the Elements:** UV resistant and chemical-proof formula keeps your surfaces safe from rust, corrosion, and weather damage.
- • **Watertight Protection Anywhere:** Brush, roll, dip, or pour on a seamless, flexible rubber barrier that blocks water, air, and moisture.
- • **Versatile Surface Compatibility:** Works flawlessly on metal, wood, glass, concrete, plastic, and more—perfect for indoor and outdoor fixes.
- • **Easy Application & Fast Coverage:** Smooth, fast-drying liquid that lets you apply multiple thin coats for a professional-grade seal every time.

## Overview

Flex Seal Liquid Rubber Sealant is a 16 oz gray, waterproof coating that dries to a flexible, durable rubberized layer. It offers superior protection against water, air, UV rays, and chemicals, making it ideal for sealing roofs, foundations, patio furniture, and more. Compatible with a wide range of surfaces, it’s easy to apply by brush, roller, or pour, ensuring a fast, watertight seal that flexes with temperature changes and resists rust and corrosion.

## Description

Flex Seal Liquid Rubber Sealant Coating, Waterproof, Gray, 16 oz | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry: desertcart.com: Tools & Home Improvement

Review: It's great - Expensive but very effective. Is as advertised and seen on t v. I was skeptical but other than it being kind of a one time use due to it drying out. It was great. Just make sure you use it all.
Review: It really works! - It really works! It’s incredible! Highly recommend for water leakage! Not for plumbing!

## 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 | B01GFY9X3E |
| Best Sellers Rank | #1,246 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Hardware Sealers |
| Brand | Flex Seal Liquid |
| Brand Name | Flex Seal Liquid |
| Color | Gray |
| Compatible Material | Rubber, Wood, Metal, Tile, Concrete, Masonry, Fabric, Glass, Plastic, Aluminum, Porcelain, Dry Wall, Cement, Some Vinyls |
| Customer Reviews | 4.4 out of 5 stars 13,970 Reviews |
| Global Trade Identification Number | 00853517006375 |
| Included Components | Flex Seal Liquid Rubber in a Can, 16-oz, Gray |
| Item Dimensions | 4 x 3.4 x 3.4 inches |
| Item Form | Liquid |
| Item Type Name | Flex Seal Liquid Swift Response LFSGRYR16, Gray As Seen On TV, 16 OZ |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 4 x 3.4 x 3.4 inches |
| Manufacturer | Flex Seal Liquid |
| Material | Rubber |
| Material Type | Rubber |
| Model | FLEX SEAL - LFSGRYR16 - GRAY |
| Number of Items | 1 |
| Part Number | LFSGRYR16 |
| Style | Custom |
| Style Name | Custom |
| Surface Recommendation | Roof |
| UPC | 853517006375 |
| Unit Count | 16 Fluid Ounces |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item Weight:** 16 ounces
- **Item dimensions L x W x H:** 4 x 3.4 x 3.4 inches
- **Material:** Rubber
- **Style:** Custom

## Images

![Rubber Sealant Coating, Waterproof, Gray, 16 oz - Image 1](https://m.media-amazon.com/images/I/81+HdR2ohmL.jpg)
![Rubber Sealant Coating, Waterproof, Gray, 16 oz - Image 2](https://m.media-amazon.com/images/I/81Oq9R2IfcL.jpg)
![Rubber Sealant Coating, Waterproof, Gray, 16 oz - Image 3](https://m.media-amazon.com/images/I/91qZtf-CpCL.jpg)
![Rubber Sealant Coating, Waterproof, Gray, 16 oz - Image 4](https://m.media-amazon.com/images/I/81BAaD+8GHL.jpg)
![Rubber Sealant Coating, Waterproof, Gray, 16 oz - Image 5](https://m.media-amazon.com/images/I/813PajvpU8L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Can it be painted once dried?**
A: Yes Flex Seal Liquid can be painted.

**Q: how easy is clean-up**
A: Not easy.  Some utensils can be cleaned by just wiping off with a rag.  Use gloves as it is hard to get off skin. We discarded rollers and brushes.

**Q: Is this  mold resistant?**
A: Flex Seal Liquid is mildew resistant.

**Q: can this be used as a sill seal,  i am building a shed on a concrete slab and want to seal the shed frame to the concrete**
A: can I use Flex seal on my shower floor

## Customer Reviews

### ⭐⭐⭐⭐⭐ It's great
*by B***D on August 26, 2026*

Expensive but very effective. Is as advertised and seen on t v. I was skeptical but other than it being kind of a one time use due to it drying out. It was great. Just make sure you use it all.

### ⭐⭐⭐⭐⭐ It really works!
*by S***T on August 10, 2026*

It really works! It’s incredible! Highly recommend for water leakage! Not for plumbing!

### ⭐⭐⭐⭐ A little expensive, but it does the job.
*by G***R on April 6, 2026*

I used this on a steel trash can that I store bird seed in. The top had a gash in it and no matter what I did, water would get in and ruin the seed. I hated to throw it away since that was the only problem. A can of this, and the problem was solved. It's a little spendy for the amount you get which is why I removed 1 star. But there's no question it works good. My only other gripe is that it takes a long time to set up and dry. So if you can keep your project level and dry for 24 hours, that will go a long way to helping it cure. I just used a disposable paint brush to apply it and I kept the now hard brush for future applications. It's fairly durable depending on what you're trying to accomplish. I tried using it on the feet of my deck chairs hoping it would save wear and tear on my deck? Not a good idea, it just fell off after a couple of uses. But for sealing, this is a good product.

## Frequently Bought Together

- Flex Seal Liquid, 16 oz, Gray, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement
- Flex Seal Liquid, 16 oz, Black, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry

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**Shop now:** [https://www.desertcart.com.au/products/34430165-rubber-sealant-coating-waterproof-gray-16-oz](https://www.desertcart.com.au/products/34430165-rubber-sealant-coating-waterproof-gray-16-oz)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-08-31*