---
product_id: 309008007
title: "Flex Seal Paste, 3 lb Tub, Black, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs"
brand: "flex paste"
price: "€ 125.40"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.it/products/309008007-flex-seal-paste-3-lb-tub-black-waterproof-paintable-putty
store_origin: IT
region: Italy
---

# 100% waterproof sealant UV & mildew resistant multi-surface adhesion Flex Seal Paste, 3 lb Tub, Black, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs

**Brand:** flex paste
**Price:** € 125.40
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Flex Seal Paste, 3 lb Tub, Black, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs by flex paste
- **How much does it cost?** € 125.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/309008007-flex-seal-paste-3-lb-tub-black-waterproof-paintable-putty)

## Best For

- flex paste enthusiasts

## Why This Product

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

## Key Features

- • **Seal Leaks Instantly:** Stops water and air infiltration fast for peace of mind.
- • **DIY-Ready & Versatile:** Perfect for home, RV, roof, and craft projects—no pro needed.
- • **Universal Surface Grip:** Clings effortlessly to drywall, concrete, EPDM, and more.
- • **Weatherproof Durability:** UV and mildew resistant for long-lasting outdoor protection.
- • **Paintable & Smooth Finish:** Seamlessly blends with your walls and repairs for a professional look.

## Overview

Flex Seal Paste is a 3 lb black waterproof putty designed to fill gaps, cracks, and holes on a variety of surfaces including walls, drywall, concrete, and EPDM. It offers fast leak-stopping power, UV and mildew resistance, and a paintable finish, making it ideal for both indoor and outdoor repairs and DIY projects.

## Description

Flex Paste is an excellent waterproof sealant. It can be used on windows, doors, vents, and thresholds. It's easy-to-use and perfect for all types of indorr and outdoor repairs. It's even greawt for DIY projects. Crafts, hobbies, and so much more.

## Features

- Stop Leaks Fast
- Clings to a wide variety of surfaces
- UV and mildew resistant
- Perfect for all types of indoor and outdoor projects and repairs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 12.7 x 10.8 x 10.8 cm; 1.36 kg |
| Item model number | FLEX SEAL - PFSBLKR32 - BLACK |
| Batteries Required? | No |
| Batteries Included? | No |
| Material Type(s) | Plastic |
| Color | Black |
| Release date | 1 January 2024 |
| ASIN | B084TDDCWW |

## Product Details

- **Material:** Plastic
- **Brand:** Flex Paste
- **Style:** Compact
- **Item weight:** 1.36 kg
- **Item dimensions L x W x H:** 12.7 x 10.8 x 10.8 centimeters

## Images

![Flex Seal Paste, 3 lb Tub, Black, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 1](https://m.media-amazon.com/images/I/51aauiVmPML.jpg)

## Questions & Answers

**Q: Could you do several layers or one very thick layer to create a rubberized coating on something?**
A: Absolutely, just please remember that the thicker the final coating is, the longer the cure time will be. We highly advise creating the coating by adding layers to the surface rather than just one thick coat.

**Q: Any temperature requirement?**
A: Flex Paste can be applied in a wide range of temperatures from 0°F – 150ۜ°F. Once applied and fully cured it can withstand a wider range of temperatures from -40°F – 200°F.

**Q: Can this be used to fix crack in small ref/frezer**
A: Hi there. Thank you so much for reaching out. Flex Paste can withstand low temps like that in a freezer. Although some customers have found success with similar applications, it has not been tested for its safety when coming in contact with items used for food preparation, storing, or serving. Please contact us if you have any additional questions. We're always happy to help. Flex On!

**Q: can flex paste be painted ?**
A: Yes. Must be fully cured before painting.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    We will see
  

*by M***N on Reviewed in Canada on 30 November 2020*

Not as easy to apply as I would have liked but if my garage doesn’t flood inthe spring it’s worth it

### ⭐⭐⭐ 







  
  
    Works great.
  

*by S***. on Reviewed in Canada on 16 August 2021*

This product works great. Unfortunately, the pail I received had a good part off it already dried up and unusable. That was a bit disappointing as I was short material to get the job done.

### ⭐⭐⭐ 







  
    Excellent produit
  
  

*by R***T on Reviewed in Canada on 11 July 2021*

J'ai utilisé ce produit pour sceller une fissure de fondation.

## Frequently Bought Together

- Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, Black, Quart
- Flex Seal, 14 oz, Clear, Stop Leaks Instantly, Transparent Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More
- Flex Seal Liquid, 16 oz, Clear, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry

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**Shop now:** [https://www.desertcart.it/products/309008007-flex-seal-paste-3-lb-tub-black-waterproof-paintable-putty](https://www.desertcart.it/products/309008007-flex-seal-paste-3-lb-tub-black-waterproof-paintable-putty)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-22*