---
product_id: 625954390
title: "Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack"
brand: "flex seal"
price: "$101.36"
currency: USD
in_stock: true
reviews_count: 8
category: "Flex Seal"
url: https://www.desertcart.us/products/625954390-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable
store_origin: US
region: United States of America
---

# Fully Paintable Finish 100% Waterproof Seal No Caulk Gun Needed Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack

**Brand:** flex seal
**Price:** $101.36
**Availability:** ✅ In Stock

## Summary

> 💪 Seal Smart, Live Leak-Free!

## Quick Answers

- **What is this?** Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack by flex seal
- **How much does it cost?** $101.36 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/625954390-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable)

## 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

- • **Snap & Save Cap:** Eliminates waste and keeps your sealant fresh for next time
- • **Durability That Lasts:** Won’t shrink, crack, or become brittle—UV & chemical resistant
- • **Versatile Use Anywhere:** Perfect for indoor/outdoor, bath, shower, RV, marine, auto & more
- • **Ultimate Weatherproof Barrier:** Seals out water, air, and moisture on any surface, wet or dry
- • **Effortless Precision Application:** Adjustable Trigger Flow Nozzle for mess-free control

## Overview

Flex Caulk is a cutting-edge hybrid polymer sealant designed for professional-grade waterproofing and weatherproofing. Its innovative adjustable nozzle allows precise, gun-free application, while its advanced formula adheres to virtually any surface—wet or dry—without shrinking or cracking. Fully paintable and UV resistant, this 9 oz 2-pack is your go-to solution for durable, mess-free sealing across indoor and outdoor projects, from windows to marine use.

## Description

Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack: desertcart.com: Industrial & Scientific

Review: Absolutely incredible product 5 Stars! - I am no handyman and definitely not good at DIY stuff around the House, but this practical and excellent product gave me the confidence to seal up my Window in my Basement and it worked flawlessly! I can’t say enough good things about this product! It’s easy to use and does exactly as the product claims and there was virtually no mess!
Review: Easy to use - Worked well to seal air leaks in my 4 seasons room. Super easy to use and not very messy. I already bought another tube. The cap comes on and off easily. Way better then traditional caulk

## Features

- So easy to use.
- No caulk gun needed.
- Adjustable Trigger Flow Nozzle.
- Advanced hybrid polymer formulation.
- Snap & Save cap eliminates waste.
- Seals out water, air, and moisture.
- Adheres to virtually any surface, wet or dry.
- Won’t shrink, crack, or become brittle.
- UV and chemical resistant.
- Fully paintable.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D2FKVQDK |
| Best Sellers Rank | #180 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk |
| Brand | Flex Seal |
| Color | White |
| Date First Available | April 22, 2024 |
| Item Form | Liquid |
| Item Weight | 9 ounces |
| Liquid Volume | 18 Fluid Ounces |
| Manufacturer | Swift Response, LLC |
| Material | Polymer |
| Number of Items | 1 |
| Product Dimensions | 11.5 x 3.5 x 1.75 inches |
| Surface Recommendation | Window |
| UPC | 810129871098 |
| Unit Count | 18.0 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal
- **Color:** White
- **Item Form:** Liquid
- **Item Weight:** 9 Ounces
- **Liquid Volume:** 18 Fluid Ounces

## Images

![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack - Image 1](https://m.media-amazon.com/images/I/310t+fuAIJL.jpg)
![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack - Image 2](https://m.media-amazon.com/images/I/412X8OtAfOL.jpg)
![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack - Image 3](https://m.media-amazon.com/images/I/414NsaRbOsL.jpg)
![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack - Image 4](https://m.media-amazon.com/images/I/41VyP3lvCLL.jpg)
![Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack - Image 5](https://m.media-amazon.com/images/I/41wlP7cuEbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Absolutely incredible product 5 Stars!
*by J***T on November 22, 2025*

I am no handyman and definitely not good at DIY stuff around the House, but this practical and excellent product gave me the confidence to seal up my Window in my Basement and it worked flawlessly! I can’t say enough good things about this product! It’s easy to use and does exactly as the product claims and there was virtually no mess!

### ⭐⭐⭐⭐⭐ Easy to use
*by S***A on January 20, 2026*

Worked well to seal air leaks in my 4 seasons room. Super easy to use and not very messy. I already bought another tube. The cap comes on and off easily. Way better then traditional caulk

### ⭐⭐⭐⭐ Flex calk
*by B***R on November 24, 2025*

Is great product easy to use

## Frequently Bought Together

- Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack
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**Shop now:** [https://www.desertcart.us/products/625954390-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable](https://www.desertcart.us/products/625954390-flex-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong-paintable)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*