---
product_id: 405402648
title: "Rubber Sealant Coating, Waterproof, Gray, 128 oz"
brand: "flex seal liquid"
price: "₨128821"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/405402648-rubber-sealant-coating-waterproof-gray-128-oz
store_origin: LK
region: Sri Lanka
---

# 100% waterproof & moisture-proof seal UV resistant for long-lasting durability 128 oz versatile liquid rubber Rubber Sealant Coating, Waterproof, Gray, 128 oz

**Brand:** flex seal liquid
**Price:** ₨128821
**Availability:** ✅ In Stock

## Summary

> 💧 Seal the deal with Flex Seal — because leaks don’t wait!

## Quick Answers

- **What is this?** Rubber Sealant Coating, Waterproof, Gray, 128 oz by flex seal liquid
- **How much does it cost?** ₨128821 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/405402648-rubber-sealant-coating-waterproof-gray-128-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

- • **Seal It Like a Pro:** Brush, roll, dip, or pour on a watertight, flexible rubber coating that stops leaks fast.
- • **Multi-Surface Mastery:** Adheres seamlessly to metal, glass, masonry, and more—perfect for indoor and outdoor fixes.
- • **Rust & Corrosion Defender:** Prevents rust and corrosion, extending the life of your outdoor gear and home essentials.
- • **Built to Brave the Elements:** UV resistant and weatherproof—resists rain, snow, sun, and hail for year-round protection.
- • **Effortless Application, Maximum Impact:** Smooth coverage with quick drying layers ensures a professional-grade finish every time.

## Overview

Flex Seal Liquid Rubber Sealant is a 128 oz gray, waterproof coating that dries to a flexible, durable rubberized layer. It’s UV resistant, prevents rust and corrosion, and works on virtually any surface—metal, glass, masonry—making it ideal for indoor and outdoor repairs like roofs, basements, RVs, and gutters. Trusted by thousands with a 4.5-star rating, it offers a fast, easy, and long-lasting solution to stop leaks and protect your investments.

## Description

Starts out as a thick liquid and dries to a super strong, flexible, watertight, rubberized coating.
Blocks out air, water, and moisture for a superior seal, virtually anywhere.
Extends the life of patio furniture, pool pumps, RV and shed roofs, and more.
Expands, contracts, flexes and stretches. Resists rain, snow, sun, and hail.
Works on all types of surfaces, even challenging ones, like metal and glass.
Use indoors and outdoors for basement waterproofing, foundation fixes, roof repairs, and more.
Fully clean and dry the surface for best results. Etch the surface to help with adhesion if needed.
For the best application, use a standard disposable paint roller or paint brush.
Apply several even, thin coats and wait 24 - 48 hours for each layer to fully dry before adding the next.
Always place the lid back on the container after each use. If drying occurs, remove any skin before using product.

## 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 | B07B6CWHTW |
| Best Sellers Rank | #1,152 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #4 in Hardware Sealers |
| Brand Name | Flex Seal Liquid |
| Color | Gray |
| Compatible Material | Rubber |
| Customer Reviews | 4.5 4.5 out of 5 stars (14,036) 4.5 out of 5 stars |
| Included Components | Item |
| Item Dimensions | 7.75 x 6.5 x 6.5 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 | Liquid Rubber Sealant Coating in a Can |
| Item Weight | 11.3 pounds |
| Manufacturer | Swift Response, LLC |
| Material Type | Rubber |
| Model | FSLFSGRYR01 |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Part Number | FSLFSGRYR01 |
| Style Name | Liquid Rubber |
| Surface Recommendation | surface_recommendation |
| Unit Count | 128 Fluid Ounces |
| Upc | 853517006573 |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item Weight:** 11.3 pounds
- **Item dimensions L x W x H:** 7.75 x 6.5 x 6.5 inches
- **Material:** Rubber
- **Style:** Liquid Rubber

## Images

![Rubber Sealant Coating, Waterproof, Gray, 128 oz - Image 1](https://m.media-amazon.com/images/I/819itNCdM5L.jpg)

## Available Options

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

## Frequently Bought Together

- Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, 1 Gallon, Gray
- Flex Seal Liquid, 1 Gallon, 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

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**Shop now:** [https://www.desertcart.lk/products/405402648-rubber-sealant-coating-waterproof-gray-128-oz](https://www.desertcart.lk/products/405402648-rubber-sealant-coating-waterproof-gray-128-oz)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-10-07*