---
product_id: 728213860
title: "Flex Paste 1 Pound Jar"
brand: "フレックスシール(flex seal)"
price: "R$121"
currency: BRL
in_stock: false
url: https://www.desertcart.com.br/products/728213860-flex-paste-1-pound-jar
store_origin: BR
region: Brazil
---

# Works underwater, dries underwater Fully paintable & UV resistant Waterproof rubberized barrier Flex Paste 1 Pound Jar

**Brand:** フレックスシール(flex seal)
**Price:** R$121
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal it, fill it, and flex your fix game!

## Quick Answers

- **What is this?** Flex Paste 1 Pound Jar by フレックスシール(flex seal)
- **How much does it cost?** R$121 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/728213860-flex-paste-1-pound-jar)

## Best For

- フレックスシール(flex seal) enthusiasts

## Why This Product

- Trusted フレックスシール(flex seal) brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Finish:** Once cured, paint over it any color you want—UV and corrosion resistant for lasting durability.
- • **Underwater Ready:** Unique formula cures even when applied underwater—perfect for marine and outdoor projects.
- • **Fill Big Gaps Instantly:** Super thick rubber paste fills large cracks, holes, and gaps with ease, eliminating waste.
- • **Versatile DIY Essential:** Ideal for everything from foundation repairs to RVs, showers, and pest-proofing your home.
- • **Seal & Protect Like a Pro:** Creates a flexible, airtight, and waterproof seal that locks out air, water, and moisture.

## Overview

Flex Paste 1 Pound Jar is a premium, super thick rubberized sealant that penetrates deep to create a flexible, waterproof barrier. It works underwater, fills large gaps instantly, and is fully paintable with UV and corrosion resistance. Perfect for professional-grade repairs and DIY projects across indoor, outdoor, marine, and automotive applications.

## Description



## Features

- Brand New! MAINTAIN FRESH CONTAINERS - Keeps air out and locks in freshness, expands the seal of the flex paste and eliminates waste
- COAT, SEAL, PROTECT - Penetrates deep and seals out air, water, and moisture. Once dry, it turns into a strong, flexible, waterproof rubberized barrier
- Can be used underwater - can be used in water and dry in water
- FILL LARGE AREA - Super thick rubber paste bonds to the surface and fills large gaps, cracks and holes instantly
- Fully Paintable - Once fully cured, you can paint any color. Rust and corrosion resistant and UV resistant
- EXCELLENT USES - Fill cracks and holes, repair foundation and concrete, seal rodents and pests, bath and shower, indoor and outdoor projects, roof, RV, camper, automotive, marine, lawn and garden projects, DIY, hobbies and more
- Made in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | フレックスシール(Flex Seal) |
| Model Number | FLEX SEAL - PFSBLKR16 - BLACK |
| Product Dimensions | 10.8 x 10.8 x 6.35 cm; 453.59 g |
| Color | Black |
| Name List for Name Plates | 1lb Black |
| Material | Rubber |
| Are Batteries Included | No |
| Item Weight | 454 g |

## Product Details

- **Material:** Rubber
- **Brand:** フレックスシール(Flex Seal)
- **Style:** 1lb Black
- **Item Weight:** 1 Pounds
- **Item dimensions L x W x H:** 10.8 x 10.8 x 6.4 cm

## Images

![Flex Paste 1 Pound Jar - Image 1](https://m.media-amazon.com/images/I/71Avii-yA1L.jpg)
![Flex Paste 1 Pound Jar - Image 2](https://m.media-amazon.com/images/I/81yaLw1mdAL.jpg)
![Flex Paste 1 Pound Jar - Image 3](https://m.media-amazon.com/images/I/91TzUOYxWfL.jpg)
![Flex Paste 1 Pound Jar - Image 4](https://m.media-amazon.com/images/I/91rCsG0fFFL.jpg)
![Flex Paste 1 Pound Jar - Image 5](https://m.media-amazon.com/images/I/81X0MV1+SrL.jpg)

## Questions & Answers

**Q: Can this be used on flexible surfaces?**
A: Depends on how flexible. It has to be able to adhere to the surface. It cures the same as rubber in a tire. There is some give.

**Q: Seal wet surface**
A: Hello there. That's an excellent question. Flex Paste can be applied to dry or wet surfaces and even underwater. It does not dissolve, creating a watertight seal. Thank you very much for reaching out to us with your question. Please write to us anytime. We're always happy to help. Flex On!

**Q: Flex seal pasta can it be used on curved surfaces?**
A: Yes it can be used on any curved and even upside down surface but if ordering on-line, if you open the can and the edges are turning hard return it ASAP because chances is it's hard on bottom as-well and you don't get your money worth

**Q: Can I use in a in ground swimming pool to repair a crack**
A: Yes, it can be applied underwater. It won’t dissolve or wash away. It even dries underwater! Flex Paste is easy to use. With a putty knife, trowel, spatula, roller, or stiff brush remove a smooth even layer of material from the top of the tub. Scooping deeply into the tub may cause air pockets which can dry FLEX PASTE.  Apply a generous amount using a smooth sweeping motion.

## 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, Half-Quart
- 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, Cartridge
- Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows

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**Shop now:** [https://www.desertcart.com.br/products/728213860-flex-paste-1-pound-jar](https://www.desertcart.com.br/products/728213860-flex-paste-1-pound-jar)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-21*