---
product_id: 330580026
title: "Rubber Sealant Coating, Waterproof, White, 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: "€ 697.16"
currency: EUR
in_stock: true
reviews_count: 8
category: "Flex Seal Liquid"
url: https://www.desertcart.sk/products/330580026-rubber-sealant-coating-waterproof-white-320-oz-stops-leaks-fast
store_origin: SK
region: Slovakia
---

# 100% waterproof seal UV resistant for lasting protection 320 oz heavy-duty coverage Rubber Sealant Coating, Waterproof, White, 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:** € 697.16
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it once, seal it right — Flex Seal your way to leak-proof confidence!

## Quick Answers

- **What is this?** Rubber Sealant Coating, Waterproof, White, 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?** € 697.16 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/330580026-rubber-sealant-coating-waterproof-white-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

- • **Pro-Grade Durability:** UV resistant formula ensures long-lasting performance under harsh conditions
- • **Ultimate Leak Defense:** Seals out water, air, and moisture with a flexible rubberized coating
- • **Versatile Application:** Brush, roll, dip, or pour for effortless, precise coverage anywhere
- • **Rust & Corrosion Shield:** Protects surfaces from chemical damage and weather wear
- • **Massive 2.5 Gallon Capacity:** Covers large projects like RV roofs, basements, gutters, and masonry with ease

## Overview

Flex Seal Liquid Rubber Sealant Coating is a professional-grade, waterproof white rubber coating in a massive 320 oz can. Designed for versatile use, it can be brushed, rolled, dipped, or poured to create a flexible, watertight barrier that resists UV rays, rust, and corrosion. Ideal for sealing leaks on roofs, RVs, basements, gutters, and masonry, it delivers fast, durable protection trusted by thousands of users.

## Description

desertcart.com: Flex Seal Liquid Rubber Sealant Coating, Waterproof, White, 320 oz | Stops leaks fast, brush, roll, dip or pour on, UV resistant, prevents rust, corrosion, roof, basement, RV, gutters, masonry : Automotive

Review: I WOULD HIGHLY RECOMMEND THIS PRODUCT! - EXCELLENT PRODUCT! I wish I would have known about this before buying the cheaper stuff, which was a total waste of my money & energy! This Product is Truly FIRST RATE!
Review: The product is easy to work with and it keeps out the water! - I looked at a number of different products to use on the roof of my RV. It is an older RV, 1985 and other owners had removed air conditioner and roof vent. The patches were poorly done, and were done with various materials. I decided to go with Flexseal having used the product for other purposes and being satisfied. When I was on the roof I noticed a weak spot with the material being broken in several places. I decided to use a piece of roofing metal and cut it to size. I then used construction adhesive to glue it to the roof. I placed weights around the edges to get a tight patch. I then applied the Flexseal over the patch. Totally on the patch I put three coats and put extra on the edges of the patch. I purchased the 2 1/2 gallon size and I was able to cover the roof two times with material left over. It is a class C motorhome measuring 25 feet. For the first coat I used a roller for the center and a 3 inch short bristle brush for the edges and around fittings. The roller leaves a little thinner application so I used the brush only on the second coat. Each dip of the brush only covered a 6 inch by 6 inch area but I was able to apply it thicker. There have been several hard rains since it was applied and there are no leaks. I am pleased with the product and would recommend it.

## 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 | B0916SLFH1 |
| Best Sellers Rank | #39,498 in Automotive ( See Top 100 in Automotive ) #66 in RV Sealants |
| Brand | Flex Seal Liquid |
| Brand Name | Flex Seal Liquid |
| Color | White |
| Compatible Material | Concrete |
| Customer Reviews | 4.6 out of 5 stars 158 Reviews |
| Global Trade Identification Number | 00850017897441 |
| Included Components | Item |
| Item Dimensions | 10.5 x 10 x 10 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 | Flex Liquid MAX - White 2.5 Gallons |
| Item Weight | 28 pounds |
| Item dimensions L x W x H | 10.5 x 10 x 10 inches |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Material Type | Rubber |
| Model | LFSMAXWHT02 |
| Number of Items | 1 |
| Part Number | LFSMAXWHT02 |
| Style | Liquid Rubber |
| Style Name | Liquid Rubber |
| Surface Recommendation | Roof |
| UPC | 850017897441 |
| Unit Count | 320 Fluid Ounces |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item Weight:** 28 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, White, 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/81rgnPYSTgL.jpg)

## Questions & Answers

**Q: What is the difference between the MAX and the regular?**
A: The max is a slightly different white color. Different color than spray too. Which ever you choose stick with one or you will have multiple shades of white.

**Q: What's the best roller nap quarter inch or three eights to apply this with**
A: Product is super thick compared to regular paint. Shortest to no nap the best. Takes practice to get used to products viscosity. Try to apply thick and in one coat for best results. Product will self level as well and can also apply with trowel.

**Q: Will this work on a fiberglass swimming pool ?**
A: I'm not sure how long it will last because it is not reccomended for underfoot applications

**Q: Will this work to waterproof bottom of window sills?**
A: Yes. This will work well

## Customer Reviews

### ⭐⭐⭐⭐⭐ I WOULD HIGHLY RECOMMEND THIS PRODUCT!
*by A***R on July 20, 2026*

EXCELLENT PRODUCT! I wish I would have known about this before buying the cheaper stuff, which was a total waste of my money & energy! This Product is Truly FIRST RATE!

### ⭐⭐⭐⭐⭐ The product is easy to work with and it keeps out the water!
*by J***E on May 11, 2025*

I looked at a number of different products to use on the roof of my RV. It is an older RV, 1985 and other owners had removed air conditioner and roof vent. The patches were poorly done, and were done with various materials. I decided to go with Flexseal having used the product for other purposes and being satisfied. When I was on the roof I noticed a weak spot with the material being broken in several places. I decided to use a piece of roofing metal and cut it to size. I then used construction adhesive to glue it to the roof. I placed weights around the edges to get a tight patch. I then applied the Flexseal over the patch. Totally on the patch I put three coats and put extra on the edges of the patch. I purchased the 2 1/2 gallon size and I was able to cover the roof two times with material left over. It is a class C motorhome measuring 25 feet. For the first coat I used a roller for the center and a 3 inch short bristle brush for the edges and around fittings. The roller leaves a little thinner application so I used the brush only on the second coat. Each dip of the brush only covered a 6 inch by 6 inch area but I was able to apply it thicker. There have been several hard rains since it was applied and there are no leaks. I am pleased with the product and would recommend it.

### ⭐⭐⭐⭐⭐ Great paint
*by M***N on July 21, 2026*

Fantastic for my camper roof. It needs rolled on

## Frequently Bought Together

- Flex Seal Liquid MAX, 2.5 Gallon, White, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack
- Flex Seal Liquid, 1 Gallon, White, 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.sk/products/330580026-rubber-sealant-coating-waterproof-white-320-oz-stops-leaks-fast](https://www.desertcart.sk/products/330580026-rubber-sealant-coating-waterproof-white-320-oz-stops-leaks-fast)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-09-11*