---
product_id: 234733057
title: "Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge"
brand: "flex paste"
price: "$40.95"
currency: USD
in_stock: true
category: "Flex Paste"
url: https://www.desertcart.us/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block
store_origin: US
region: United States of America
---

# Waterproof & seals air/moisture Fully paintable after curing Fills large gaps & cracks instantly Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge

**Brand:** flex paste
**Price:** $40.95
**Availability:** ✅ In Stock

## Summary

> 💪 Seal it, paint it, forget it — the ultimate fix-it flex!

## Quick Answers

- **What is this?** Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge by flex paste
- **How much does it cost?** $40.95 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block)

## 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

- • **Paintable Finish:** Customizable color match to blend seamlessly with your space
- • **Stay Fresh Container:** Locks in freshness, no waste, longer sealing power
- • **Underwater Application:** Applies and dries underwater for ultimate versatility
- • **Multi-Surface Compatibility:** Works on drywall, concrete, EPDM, metal & more
- • **Rubberized Flexible Barrier:** Creates a strong, watertight, UV-resistant seal

## Overview

Flex Paste Waterproof Paintable Putty is a high-performance, rubberized sealant designed to block water, air, and moisture. Its innovative stay-fresh container ensures no waste and extended shelf life. This versatile putty fills large gaps and cracks, cures to a flexible, UV-resistant barrier, and can be painted to perfectly match any surface, making it ideal for walls, roofs, RVs, and more.

## Description

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, White, Cartridge - desertcart.com

## Features

- NEW! STAY FRESH CONTAINER – Blocks out air and locks in freshness to extend the sealing power of Flex Paste, with no waste
- COAT, SEAL & PROTECT - Penetrates deep to seal out air, water, and moisture. Once dry, it turns into a strong, flexible, watertight, rubberized barrier
- WORKS UNDERWATER - Can be applied underwater, and it even dries underwater
- FILLS LARGE AREAS - Super thick rubber paste clings to the surface and instantly fills large gaps, cracks, and holes
- FULLY PAINTABLE - Once fully cured, it can be painted any color. Helps prevent rust and corrosion, and it is UV resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084TCZLQQ |
| Best Sellers Rank | #7,756 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #27 in Hardware Sealers |
| Brand Name | Flex Paste |
| Color | White |
| Compatible Material | Brick, Ceramic, Concrete, Fabric, Glass, Metal, Plastic, Porcelain, Stone, Wood |
| Customer Reviews | 4.0 4.0 out of 5 stars (6,021) |
| Included Components | Item |
| Item Dimensions | 11.25 x 3 x 3 inches |
| Item Form | Paste |
| Item Type Name | Flex Seal PFSWHTR10 Flex Paste 9 Oz. Cartridge - White |
| Item Weight | 9 Ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Rubber |
| Model | PFSWHTR10 |
| Number of Items | 1 |
| Part Number | PFSWHTR10 |
| Style Name | 9 oz White |
| Surface Recommendation | Windows,Doors |
| UPC | 850010226866 |
| Unit Count | 9.0 Ounce |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Paste
- **Item Weight:** 9 Ounces
- **Item dimensions L x W x H:** 11.25 x 3 x 3 inches
- **Material:** Rubber
- **Style:** 9 oz White

## Images

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

## Available Options

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

## 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, White, Cartridge
- 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.us/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block](https://www.desertcart.us/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-04*