---
product_id: 24980581
title: "Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz"
brand: "flex seal liquid"
price: "€ 49.74"
currency: EUR
in_stock: true
reviews_count: 13
category: "Flex Seal Liquid"
url: https://www.desertcart.sk/products/24980581-flex-seal-liquid-rubber-sealant-coating-waterproof-black-16-oz
store_origin: SK
region: Slovakia
---

# UV Resistant for Long Life 100% Waterproof Seal Flexible Rubber Coating Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz

**Brand:** flex seal liquid
**Price:** € 49.74
**Availability:** ✅ In Stock

## Summary

> 🛡️ Flex Seal Liquid: The ultimate waterproof armor your projects deserve!

## Quick Answers

- **What is this?** Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz by flex seal liquid
- **How much does it cost?** € 49.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/24980581-flex-seal-liquid-rubber-sealant-coating-waterproof-black-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

- • **Built to Last:** UV resistant formula prevents rust, corrosion, and cracking
- • **Seal It Like a Pro:** Brush, roll, dip, or pour for a flawless watertight barrier
- • **Flexible & Breathable:** Expands and contracts with surfaces to avoid peeling or cracking
- • **Versatile Application:** Perfect for roofs, basements, RVs, marine, masonry & more
- • **Fast Coverage, Fast Fix:** Goes on smooth and dries quickly to stop leaks instantly

## Overview

Flex Seal Liquid is a 16 oz black rubberized coating that creates a flexible, breathable, and UV resistant waterproof seal. Ideal for roof repairs, basements, RVs, marine applications, and masonry, it prevents rust and corrosion while adapting to surface movement. Easy to apply by brushing, rolling, dipping, or pouring, it delivers fast, durable protection against water, air, and moisture.

## Description

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

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 | B019PFO4KM |
| Best Sellers Rank | #1,298 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Hardware Sealers |
| Brand | Flex Seal Liquid |
| Brand Name | Flex Seal Liquid |
| Color | Black |
| Compatible Material | Metal, Paper |
| Customer Reviews | 4.4 out of 5 stars 13,972 Reviews |
| Global Trade Identification Number | 00853517006283 |
| Included Components | 16oz Flex Seal Liquid |
| Item Dimensions | 4 x 3.4 x 3.4 inches |
| Item Form | Liquid |
| Item Highlight | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry |
| Item Type Name | As Seen On TV, 16 OZ, Black, Flex Seal Liquid |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 4 x 3.4 x 3.4 inches |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Material Type | Rubber |
| Model | LFSBLKR16 |
| Number of Items | 1 |
| Part Number | LFSBLKR16 |
| Style | Industrial |
| Style Name | Industrial |
| Surface Recommendation | Roof |
| UPC | 853517006283 |
| Unit Count | 16 Fluid Ounces |
| Warranty Description | 1 |
| 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:** Industrial

## Images

![Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz - Image 1](https://m.media-amazon.com/images/I/818wyPGkT0L.jpg)
![Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz - Image 2](https://m.media-amazon.com/images/I/81-Fck3gcCL.jpg)
![Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz - Image 3](https://m.media-amazon.com/images/I/91bYpAoL4xL.jpg)
![Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 16 oz - Image 4](https://m.media-amazon.com/images/I/81uFvdPRO9L.jpg)
![Flex Seal Liquid Rubber Sealant Coating, Waterproof, Black, 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: Could I dip wooden chair legs in this to prevent them from scratching a wood floor?**
A: Yes, you can dip wooden chair legs but as you use the chairs the bottom will wear off. If they were my chairs I would use felt pads that you can find in any hardware store.

**Q: Would a metal surface become insulated electrically after this was applied? Thinking of a tight car battery compartment...**
A: Not enough to protect the battery from eventually shorting out. I would recommend securing a thick piece of rubber between the battery terminal and the metal close to it.

**Q: How long dose this take to dry**
A: It takes at least 24-48 hours for Flex Seal Liquid to dry based on the thickness of your application.

**Q: My child has a basketball post with a plastic base that holds water.  The base has a leak. Is this product suggested? If so, any prep suggested?**
A: Anything works better with a little prep., sandpaper and clean.  It should do well.  Also as a add the new tape would probably work better.

## 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, 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

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**Shop now:** [https://www.desertcart.sk/products/24980581-flex-seal-liquid-rubber-sealant-coating-waterproof-black-16-oz](https://www.desertcart.sk/products/24980581-flex-seal-liquid-rubber-sealant-coating-waterproof-black-16-oz)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-09-01*