---
product_id: 649444307
title: "Flex Paste, 6 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: "C$55482"
currency: NIO
in_stock: true
url: https://www.desertcart.ni/products/649444307-flex-paste-6-lb-tub-black-waterproof-paintable-putty-spackle
store_origin: NI
region: Nicaragua
---

# 100% waterproof & air-blocking UV & mildew resistant 6 lb heavy-duty tub Flex Paste, 6 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:** C$55482
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal it, paint it, forget it — Flex Paste has your back!

## Quick Answers

- **What is this?** Flex Paste, 6 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?** C$55482 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/649444307-flex-paste-6-lb-tub-black-waterproof-paintable-putty-spackle)

## 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 Like a Pro:** Blocks water, air, and leaks instantly for lasting repairs
- • **Paintable Finish:** Customizable black putty that blends perfectly with your project
- • **Compact Powerhouse:** 6 lb tub delivers maximum coverage without bulk
- • **Weatherproof Warrior:** UV and mildew resistant for durable outdoor and indoor use
- • **Versatile Surface Grip:** Adheres seamlessly to drywall, concrete, EPDM, roofs, and RVs

## Overview

Flex Paste is a 6 lb black waterproof, paintable putty designed to fill gaps, cracks, and holes across multiple surfaces including drywall, concrete, EPDM, roofs, and RVs. Its rubber-based formula offers UV and mildew resistance, ensuring durable indoor and outdoor repairs that block water and air effectively.

## Description



## 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 |
|---------------|-------|
| Manufacturer | Swift Response, LLC |
| Part number | PFSBLKR64 |
| Item Weight | 2.72 kg |
| Product Dimensions | 17.78 x 17.78 x 12.95 cm; 2.72 kg |
| Item model number | FLEX SEAL - PFSBLKR64 - BLACK 6LB |
| Colour | Black |
| Style | Compact |
| Material | Rubber |
| Item Package Quantity | 1 |
| Special Features | Waterproof |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Rubber
- **Brand:** Flex Paste
- **Style:** Compact
- **Item weight:** 2.72 kg
- **Item dimensions L x W x H:** 17.8 x 17.8 x 13 centimetres

## Images

![Flex Paste, 6 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/61eyRGnnF6L.jpg)
![Flex Paste, 6 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 2](https://m.media-amazon.com/images/I/911nLdZcoXL.jpg)
![Flex Paste, 6 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 3](https://m.media-amazon.com/images/I/81Xl3rdTL9L.jpg)
![Flex Paste, 6 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 4](https://m.media-amazon.com/images/I/91Wt91pk2dL.jpg)
![Flex Paste, 6 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 5](https://m.media-amazon.com/images/I/71en2oQ4nhL.jpg)

---

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**Shop now:** [https://www.desertcart.ni/products/649444307-flex-paste-6-lb-tub-black-waterproof-paintable-putty-spackle](https://www.desertcart.ni/products/649444307-flex-paste-6-lb-tub-black-waterproof-paintable-putty-spackle)

---

*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-17*