---
product_id: 724163769
title: "Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack"
brand: "flex seal"
price: "€ 37.49"
currency: EUR
in_stock: true
reviews_count: 8
category: "Flex Seal"
url: https://www.desertcart.hr/products/724163769-flex-caulk-silicone-waterproof-and-weatherproof-sealant-strong-indoor-outdoor
store_origin: HR
region: Croatia
---

# UV & chemical resistant durability 100% waterproof & weatherproof No caulk gun needed, easy application Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack

**Brand:** flex seal
**Price:** € 37.49
**Availability:** ✅ In Stock

## Summary

> 💪 Seal smart, live leak-free — the ultimate caulk upgrade!

## Quick Answers

- **What is this?** Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack by flex seal
- **How much does it cost?** € 37.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/724163769-flex-caulk-silicone-waterproof-and-weatherproof-sealant-strong-indoor-outdoor)

## 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

- • **Built to Last:** Won't shrink, crack, or become brittle over time
- • **Versatile Mastery:** Perfect for indoor & outdoor surfaces from glass to wood
- • **All-Weather Shield:** Seals out water, air, and moisture with lasting strength
- • **Effortless Precision:** Adjustable Trigger Flow Nozzle for mess-free control
- • **Snap & Save Innovation:** Cap design eliminates waste and keeps product fresh

## Overview

Flex Caulk is a premium 100% silicone sealant designed for both indoor and outdoor use. It offers waterproof, weatherproof, UV, and chemical resistance, ensuring a durable, flexible seal that won’t crack or shrink. With an easy-to-use adjustable nozzle and no caulk gun required, it delivers professional results on a wide range of surfaces including glass, wood, tile, and marine applications. The innovative Snap & Save cap prevents waste, making it a must-have for any modern DIY enthusiast or professional.

## Description

Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-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

- No caulk gun needed
- So easy to use
- Adjustable Trigger Flow Nozzle
- 100% silicone caulk
- Snap & Save cap eliminates waste
- Seals out water, air, and moisture
- Won’t shrink, crack, or become brittle
- UV & chemical resistant
- Flexible and durable, lasts for years
- 100% waterproof and weatherproof

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F337L4W8 |
| Best Sellers Rank | #180 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Adhesive Caulk #12 in Industrial Sealants #791 in Hardware |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | White |
| Customer Reviews | 4.3 out of 5 stars 4,002 Reviews |
| Full Cure Time | 24 Hours |
| Included Components | Flex Caulk, Silicone, White, 6.5 oz, 1-Pack |
| Item Form | Aerosol |
| Liquid Volume | 6.5 Fluid Ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Silicone |
| Surface Recommendation | Porcelain, tile, metal, glass, fiberglass, wood, granite, stone, marble, fabric, upholstery, paper, and just about any other surface that is free of grease and oil. Surface Recommendation Porcelain, tile, metal, glass, fiberglass, wood, granite, stone, marble, fabric, upholstery, paper, and just about any other surface that is free of grease and oil. See more |
| UPC | 810129871609 |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal
- **Color:** White
- **Full Cure Time:** 24 Hours
- **Item Form:** Aerosol
- **Liquid Volume:** 6.5 Fluid Ounces

## Images

![Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61HPUTNixSL.jpg)
![Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack - Image 2](https://m.media-amazon.com/images/I/61WWXB1uIOL.jpg)
![Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack - Image 3](https://m.media-amazon.com/images/I/61fKOqGPRkL.jpg)
![Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack - Image 4](https://m.media-amazon.com/images/I/81CqUUo62jL.jpg)
![Flex Caulk, Silicone, Waterproof & Weatherproof Sealant, Strong, Indoor, Outdoor, Bath, Kitchen, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Glass, Tile, Marine, White, 6.5 oz, 1-Pack - Image 5](https://m.media-amazon.com/images/I/81CsD4sqDoL.jpg)

## Available Options

This product comes in different **Style** options.

## 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

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**Shop now:** [https://www.desertcart.hr/products/724163769-flex-caulk-silicone-waterproof-and-weatherproof-sealant-strong-indoor-outdoor](https://www.desertcart.hr/products/724163769-flex-caulk-silicone-waterproof-and-weatherproof-sealant-strong-indoor-outdoor)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-01-28*