---
product_id: 733250022
title: "Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More"
brand: "flex seal"
price: "£10148.54"
currency: GBP
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.uk/products/733250022-flex-seal-max-17-oz-1-pack-black-instant-leak
store_origin: GB
region: United Kingdom
---

# Watertight flexible rubber coating Heat & cold resistant, no cracking 17 oz powerful sealant volume Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More

**Brand:** flex seal
**Price:** £10148.54
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal it. Protect it. Flex your fix like a pro.

## Quick Answers

- **What is this?** Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More by flex seal
- **How much does it cost?** £10148.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/733250022-flex-seal-max-17-oz-1-pack-black-instant-leak)

## 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

- • **No Mess, No Drip:** Formulated to stay put without splattering or dripping, even in tough conditions
- • **Paintable Finish:** Dries black but can be painted any color to match your style
- • **Instant Leak Stopper:** Seals cracks & holes on contact for immediate protection
- • **Versatile Application:** Perfect for gutters, roofs, RVs, windows, and creative projects alike
- • **All-Weather Durability:** Remains flexible and crack-free from freezing cold to summer heat

## Overview

Flex Seal MAX is a 17 oz black rubberized spray sealant designed to instantly stop leaks and protect surfaces with a durable, flexible, waterproof coating. Ideal for a wide range of applications including gutters, roofs, RVs, and windows, it withstands extreme temperatures without cracking or peeling and can be painted over once dry.

## Description

desertcart.co.jp: Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More : DIY, Tools & Garden

Review: After the rain I checked the area where it was used and pleased it worked.
Review: Product worked great after I let it warm up. We had a cold spell and the FLEX was in my shed. I went to use it, I shook it up and pressed the button. It was liquified, bounced off what I was sealing and splattered. It dawned on me that the FLEX could not mix well with the cold. I set it in the sun (65deg that day), had a cup of coffee, went back and used it again - Perfect. Will definitely reorder.

## Features

- Easy way to coat,seal, protect and prevent leaks! Once dry, you can paint any color
- Seeps into cracks and holes Dries to a watertight, flexible rubberized coating Flexible and flexible to last for years
- Transform and protect almost anything! Great for arts & crafts, projects and hobbies
- Won't drip or drip in summer heat. Will not crack or peel in winter cold

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0916SG7S3 |
| Amazon Bestseller | #677,641 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #760 in Hardware Sealers |
| Batteries Included | No |
| Batteries Required? | No |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (890) |
| Cutting Diameter | 1 Millimeters |
| Date First Available | April 5, 2022 |
| Included Components | Household |
| Item Diameter | 1 Millimeters |
| Item Dimensions LxWxH | 25.4 x 7 x 7 cm |
| Item Weight | 590 g |
| Manufacturer | Swift Response |
| Material | Rubber aluminum |
| Number Of Pieces | 1 |
| Part number | FSMAXBLK24 |
| Size | 17 oz (Pack of 1) |
| Style | MAX - Black, 17 oz |

## Product Details

- **Brand:** Flex Seal
- **Item Weight:** 1.3 Pounds
- **Item dimensions L x W x H:** 25.4 x 7 x 7 cm
- **Material:** Rubber aluminum
- **Style:** MAX - Black, 17 oz

## Images

![Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More - Image 1](https://m.media-amazon.com/images/I/71ekT7MmbPL.jpg)
![Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More - Image 2](https://m.media-amazon.com/images/I/715AsKYskoL.jpg)
![Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More - Image 3](https://m.media-amazon.com/images/I/71mPPs9p6ZL.jpg)
![Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More - Image 4](https://m.media-amazon.com/images/I/81CayjeHyGL.jpg)
![Flex Seal MAX 17 oz 1 Pack Black Instant Leak Stop Sealant Coating with Waterproof Rubber Spray Great for Gutters, Wood, RVs, Campers, Roof Repairs, Skylights, Windows and More - Image 5](https://m.media-amazon.com/images/I/91-L9c4NuYL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by F***I on July 27, 2024*

After the rain I checked the area where it was used and pleased it worked.

### ⭐⭐⭐⭐⭐ Review
*by S***R on January 10, 2026*

Product worked great after I let it warm up. We had a cold spell and the FLEX was in my shed. I went to use it, I shook it up and pressed the button. It was liquified, bounced off what I was sealing and splattered. It dawned on me that the FLEX could not mix well with the cold. I set it in the sun (65deg that day), had a cup of coffee, went back and used it again - Perfect. Will definitely reorder.

### ⭐⭐⭐⭐ Review
*by J***M on December 21, 2025*

Works as advertised

## Frequently Bought Together

- Flex Seal MAX, 17 oz, 1-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More
- Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 6.6 oz, 1-Pack

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**Shop now:** [https://www.desertcart.co.uk/products/733250022-flex-seal-max-17-oz-1-pack-black-instant-leak](https://www.desertcart.co.uk/products/733250022-flex-seal-max-17-oz-1-pack-black-instant-leak)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-25*