---
product_id: 16222287
title: "14 oz, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More"
brand: "flex seal"
price: "¥4999"
currency: JPY
in_stock: true
reviews_count: 8
category: "Flex Seal"
url: https://www.desertcart.jp/products/16222287-14-oz-white-stop-leaks-instantly-waterproof-rubber-spray-on
store_origin: JP
region: Japan
---

# Instant waterproof seal Heat & cold resistant Flexible rubber coating 14 oz, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More

**Brand:** flex seal
**Price:** ¥4999
**Availability:** ✅ In Stock

## Summary

> 💪 Seal it, protect it, forget it—Flex Seal has you covered!

## Quick Answers

- **What is this?** 14 oz, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More by flex seal
- **How much does it cost?** ¥4999 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/16222287-14-oz-white-stop-leaks-instantly-waterproof-rubber-spray-on)

## Best For

- flex seal enthusiasts

## Why This Product

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

## Key Features

- • **Paintable Finish:** Dries white but can be painted any color to blend seamlessly with your surfaces.
- • **Durable Flexibility:** Remains pliable for years, adapting to temperature shifts without cracking.
- • **Stop Leaks Instantly:** Spray on and seal cracks in seconds—no wait, no mess.
- • **Versatile Application:** Perfect for gutters, roofs, RVs, windows, and creative projects alike.
- • **All-Weather Protection:** Works on wet or dry surfaces, resists sagging in heat and peeling in cold.

## Overview

Flex Seal is a 14 oz white spray-on rubberized sealant that instantly stops leaks by creating a waterproof, flexible coating. Designed for durability, it resists extreme temperatures and adheres to wet or dry surfaces, making it ideal for home repairs, vehicles, and creative projects. Its paintable finish ensures a clean, customizable look, backed by a strong customer rating and top ranking in hardware sealers.

## Description

Flex Seal, 14 oz, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - desertcart.com

Review: GREAT PRODUCT - THIS PRODUCT WORKS GREAT
Review: Good Product - Flex Seal Works Great - Flex Seal is great quality. It comes ready to use so mixability is easy to get started. It's a great price. The Flex Seal is very durable, looks great and clean up is easy so removal is easy. The product seems sturdy.

## Features

- The easy way to coat, seal, protect, and stop leaks fast! Once dry, can be painted any color
- Seeps into cracks and holes. Dries to a watertight, flexible, rubberized coating. Stays flexible and pliable; lasts many years
- Transform and protect virtually everything! Ideal for arts & crafts, projects & hobbies
- Protects surface from corrosion, can be used on wet or dry surfaces
- Will not sag or drip in the Summer heat. Will not crack or peel in the Winter cold

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00W5PLX04 |
| Best Sellers Rank | #104 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Hardware Sealers |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | White |
| Compatible Material | Engineered Wood |
| Customer Reviews | 4.4 out of 5 stars 38,818 Reviews |
| Global Trade Identification Number | 00855647003613 |
| Included Components | Liquid Rubber |
| Item Dimensions | 9.5 x 2.5 x 2.5 inches |
| Item Form | Spray |
| Item Type Name | Flex Seal Liquid Rubber, White 14-oz. |
| Item Weight | 14 Ounces |
| Item dimensions L x W x H | 9.5 x 2.5 x 2.5 inches |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Material Type | Rubber |
| Model | FSWHTR20 |
| Number of Items | 1 |
| Part Number | FSWHTR20 |
| Style | White, 14 oz, 1-Pack |
| Style Name | White, 14 oz, 1-Pack |
| Surface Recommendation | Roof,Windows,Wood |
| UPC | 855647003613 |
| Unit Count | 14.0 Fluid Ounces |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal
- **Material:** Rubber
- **Style:** White, 14 oz, 1-Pack

## Images

![14 oz, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 1](https://m.media-amazon.com/images/I/71NQ824kFWL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ GREAT PRODUCT
*by P***I on April 10, 2026*

THIS PRODUCT WORKS GREAT

### ⭐⭐⭐⭐⭐ Good Product - Flex Seal Works Great
*by C***D on February 20, 2026*

Flex Seal is great quality. It comes ready to use so mixability is easy to get started. It's a great price. The Flex Seal is very durable, looks great and clean up is easy so removal is easy. The product seems sturdy.

### ⭐⭐⭐⭐ One can half full
*by K***Y on March 30, 2026*

While this worked great for the intended purpose, one of the four cans we recieved was half empty. Would appreciate some compensation from the seller. Or another can

## Frequently Bought Together

- Flex Seal, 14 oz, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More
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- Gorilla Waterproof Patch & Seal Tape, White Tape, 4" x 10' (Pack of 1) - Permanent Weather Resistant Seal for Leaks and Repairs

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**Shop now:** [https://www.desertcart.jp/products/16222287-14-oz-white-stop-leaks-instantly-waterproof-rubber-spray-on](https://www.desertcart.jp/products/16222287-14-oz-white-stop-leaks-instantly-waterproof-rubber-spray-on)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-18*