---
product_id: 299425888
title: "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"
brand: "flex seal"
price: "฿2423"
currency: THB
in_stock: true
reviews_count: 13
category: "Flex Seal"
url: https://www.desertcart.co.th/products/299425888-max-17-oz-1-pack-black-stop-leaks-instantly-waterproof
store_origin: TH
region: Thailand
---

# Paintable after drying Waterproof & flexible seal Heat & cold resistant 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

**Brand:** flex seal
**Price:** ฿2423
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it, save it, style it — Flex Seal MAX has you covered!

## Quick Answers

- **What is this?** 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 by flex seal
- **How much does it cost?** ฿2423 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/299425888-max-17-oz-1-pack-black-stop-leaks-instantly-waterproof)

## 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

- • **Customizable Finish:** Once dry, paint over it to match your style—blend repairs seamlessly into your space.
- • **Instant Leak Stopper:** Sprays on easily to seal cracks and holes fast, saving your day and your property.
- • **All-Weather Durability:** Stays flexible without cracking or peeling from -10°F to 101°F extremes.
- • **Versatile Surface Protector:** Perfect for gutters, roofs, wood, RVs, campers, skylights, and more—one can, endless fixes.
- • **Long-Lasting Rubberized Coating:** Dries to a watertight, pliable barrier that lasts for years, keeping leaks at bay.

## Overview

Flex Seal MAX is a 17 oz black spray-on rubberized sealant designed to instantly stop leaks and waterproof surfaces. It penetrates cracks and dries to a flexible, durable coating that withstands extreme temperatures without sagging, cracking, or peeling. Ideal for a wide range of applications including gutters, roofs, wood, RVs, and more, it can be painted over once dry for a seamless finish. Trusted by thousands, it offers a quick, long-lasting solution to protect and extend the life of your property.

## Description

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 - desertcart.com

Review: Excellent Product - Works as expected. I used it on an outdoor storage box. The water beads up upon contact with the wood now. Use this product in a well-ventilated area. The fumes are brutal. I used it outside, and the fumes still lingered. I used a 3M filter mask when applying it, but still smelled the fumes when I returned to the box to see if it was dry. And the box was outside while drying.
Review: Easy to apply and does the trick - Have purchased other flexseal products in the past, so was anxious to try this spray can which makes it much easier to apply than some of the other products and does a good job of ceiling. Any leaks that you have. I use mine on a corner for a gutter on the outside, and we live in a climate that can vary from 10° below 0 to 101° above.

## 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 and lasts many years.
- Transform and protect virtually everything! Ideal for arts & crafts, projects & hobbies.
- Will not sag or drip in the Summer heat. Will not crack or peel in the Winter cold.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0916SG7S3 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #413 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Hardware Sealers |
| Brand | Flex Seal |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (38,343) |
| Date First Available | March 27, 2021 |
| Included Components | Household Item |
| Item Form | Liquid, Spray |
| Item Package Quantity | 1 |
| Item Weight | 1.3 pounds |
| Item dimensions L x W x H | 10 x 2.75 x 2.75 inches |
| Item model number | FLEX SEAL - FSMAXBLK24 - BLACK |
| Manufacturer | Swift Response |
| Material | Plastic |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | FSMAXBLK24 |
| Product Dimensions | 10 x 2.75 x 2.75 inches |
| Size | 17 oz (Pack of 1) |
| Style | MAX - Black, 17 oz. |
| Surface Recommendation | Roof |
| UPC | 850010226927 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal
- **Item Weight:** 1.3 Pounds
- **Item dimensions L x W x H:** 10 x 2.75 x 2.75 inches
- **Material:** Plastic
- **Style:** MAX - Black, 17 oz.

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71ekT7MmbPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Product
*by L***U on December 28, 2025*

Works as expected. I used it on an outdoor storage box. The water beads up upon contact with the wood now. Use this product in a well-ventilated area. The fumes are brutal. I used it outside, and the fumes still lingered. I used a 3M filter mask when applying it, but still smelled the fumes when I returned to the box to see if it was dry. And the box was outside while drying.

### ⭐⭐⭐⭐⭐ Easy to apply and does the trick
*by S***R on January 4, 2026*

Have purchased other flexseal products in the past, so was anxious to try this spray can which makes it much easier to apply than some of the other products and does a good job of ceiling. Any leaks that you have. I use mine on a corner for a gutter on the outside, and we live in a climate that can vary from 10° below 0 to 101° above.

### ⭐⭐⭐⭐ Worked for cement water fountain
*by B***D on December 6, 2025*

Good product but goes on thick, hard to get a even coat.

## 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.th/products/299425888-max-17-oz-1-pack-black-stop-leaks-instantly-waterproof](https://www.desertcart.co.th/products/299425888-max-17-oz-1-pack-black-stop-leaks-instantly-waterproof)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-25*