---
product_id: 15715160
title: "14 oz, Blue, 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: "€ 43.96"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/15715160-14-oz-blue-stop-leaks-instantly-waterproof-rubber-spray-on
store_origin: FI
region: Finland
---

# Instant waterproof seal Heat & cold resistant Flexible rubber coating 14 oz, Blue, 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:** € 43.96
**Availability:** ✅ In Stock

## Summary

> 💧 Seal it. Protect it. Forget leaks forever.

## Quick Answers

- **What is this?** 14 oz, Blue, 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?** € 43.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/15715160-14-oz-blue-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 blue but can be painted any color to match your style
- • **Flexible & durable:** Rubberized coating stays pliable for years without cracking
- • **Seal leaks in seconds:** Stops leaks fast with a watertight spray-on barrier
- • **Versatile application:** Perfect for gutters, roofs, windows, RVs, and more
- • **All-weather protection:** Won't sag in summer heat or peel in winter cold

## Overview

Flex Seal is a 14 oz blue spray-on rubber sealant that instantly stops leaks by creating a flexible, waterproof coating. Designed for durability, it resists extreme temperatures without cracking or peeling, making it ideal for gutters, roofs, windows, RVs, and more. Once dry, it can be painted to blend seamlessly with any surface.

## Description

Full description not available

## 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
- Perfect for Gutters, Wood, RV, Campers, Roof Repairs, Skylights, Windows, and more

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Rubber |
| Brand | Flex Seal |
| Style | Blue, 14 oz, 1-Pack |
| Item Weight | 14 Ounces |
| Item dimensions L x W x H | 9.5 x 2.5 x 2.5 inches |
| Water Resistance Level | Waterproof |
| Item Form | Spray |
| UPC | 855647003538 |
| Unit Count | 14.0 Fluid Ounces |
| Global Trade Identification Number | 00855647003538 |
| Number of Items | 1 |
| Color | Blue |
| Surface Recommendation | Roof,Windows,Wood |
| Manufacturer | Swift Response, LLC |
| Part Number | FSBLUR20 |
| Item Weight | 14 ounces |
| Product Dimensions | 9.5 x 2.5 x 2.5 inches |
| Item model number | FLEX SEAL - FSBLUR20 - BLUE |
| Is Discontinued By Manufacturer | No |
| Size | 14 oz (Pack of 1) |
| Item Package Quantity | 1 |
| Measurement System | US |
| Included Components | Flex Seal Spray Rubber Sealant Coating, 14-oz, Blue |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Warranty |

## Product Details

- **Material:** Rubber
- **Brand:** Flex Seal
- **Style:** Blue, 14 oz, 1-Pack
- **Item Weight:** 14 Ounces
- **Item dimensions L x W x H:** 9.5 x 2.5 x 2.5 inches

## Images

![14 oz, Blue, 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/51OIY1QIBkL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can you use this on a koi pond**
A: I should work but must be dry  and have time to dry after you use flex seal

**Q: Can this be used to seal plastic in a cat box to avoid odor?**
A: Flex Seal liquid is not plant and animal safe. However Flex Seal Liquid is.  We have never tested it for this use.  I'm not sure it will take away the odor since there will still be a hole in the cat box for the odor and cat to escape.

**Q: I am trying to seal a water fountain.  but i want it to be blue.  can i use the flex seal liquid first and then spray the blue flex seal for color?**
A: I did not use the flex seal liquid, but I did use the blue flex seal on an inside pond, and it has held up very well

**Q: How many cans do I need to paint a canoe?**
A: Not sure exactly but a can doesn't cover a large area depending on how thick you need to apply it.   We used ours for smaller areas and it worked great!

## Customer Reviews

### ⭐⭐⭐⭐⭐ goes on nice and dries pretty fast, and is paintable if you need to later on
*by J***. on September 4, 2025*

using this for around my bulkhead once per year. keeps the dripping out. Also works good on foundation and steps. No more painting. A can goes a long ways. A little pricey now but what the hell isn't with the tariffs now.Have to order the gray color on Amazon. Can't find it in any stores, only the black and white. Probably sells out fast when they stock it. A very nice light gray color.

### ⭐⭐⭐⭐⭐ Great Stuff!
*by C***N on August 29, 2025*

Works well and truly seals to repel water.

### ⭐⭐⭐⭐ Okay but over priced
*by L***S on September 1, 2025*

Definitely needs to be heavily ventilated while using. Works well so far.

## Frequently Bought Together

- Flex Seal, 14 oz, Blue, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More
- Flex Seal Spray Flood Protection, 10 oz, 1-Pack, Waterproof Rubberized Coating, Removable, Use on Door Tracks, Seams, Sills, Small Openings, Corners, and Irregular Shapes and More

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**Shop now:** [https://www.desertcart.fi/products/15715160-14-oz-blue-stop-leaks-instantly-waterproof-rubber-spray-on](https://www.desertcart.fi/products/15715160-14-oz-blue-stop-leaks-instantly-waterproof-rubber-spray-on)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-01*