---
product_id: 645862098
title: "Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack"
brand: "flex seal"
price: "313 Lei"
currency: RON
in_stock: false
reviews_count: 5
category: "Flex Seal"
url: https://www.desertcart.ro/products/645862098-flex-seal-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong
store_origin: RO
region: Romania
---

# fully paintable for seamless finishes 100% waterproof & weatherproof seal no caulk gun needed, easy adjustable flow Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack

**Brand:** flex seal
**Price:** 313 Lei
**Availability:** ❌ Out of Stock

## Summary

> 💪 Seal it once, seal it right—Flex Seal Caulk has your back!

## Quick Answers

- **What is this?** Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack by flex seal
- **How much does it cost?** 313 Lei with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/645862098-flex-seal-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong)

## 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

- • **Ultimate Weather Defense:** Advanced hybrid polymer seals out water, air, and moisture—perfect for indoor & outdoor resilience.
- • **Eco-Smart Snap & Save Cap:** Innovative cap design eliminates waste and keeps your sealant fresh for the next project.
- • **Versatile Surface Mastery:** Bonds to virtually any surface, wet or dry—from wood to marine, windows to RVs, no shrinkage or cracking.
- • **Customizable Aesthetic Finish:** Paintable formula lets you blend repairs invisibly into your home or vehicle for a flawless look.
- • **Effortless Precision Application:** Adjustable trigger flow nozzle means zero mess and total control—DIY like a pro without the hassle.

## Overview

Flex Seal Caulk is a 9 oz hybrid polymer sealant designed for both indoor and outdoor use. It offers waterproof, weatherproof protection with a paintable, no-gun-needed application. Its advanced formula adheres to almost any surface, resists UV and chemicals, and prevents shrinkage or cracking, making it ideal for sealing windows, doors, roofs, marine, and automotive surfaces with professional-grade durability.

## 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, 1-Pack

Review: 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: 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 | B0D2F2DCXM |
| ASIN  | B0D2F2DCXM |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #84,184 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #481 in Hardware Sealers |
| Color | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,924) |
| Customer reviews | 4.3 4.3 out of 5 stars (3,924) |
| Date First Available | 24 May 2024 |
| Date First Available  | 24 May 2024 |
| Included components | Flex Caulk, White, 9 oz, 1-Pack |
| Item Package Quantity | 1 |
| Item Weight | 255 g |
| Item model number | CFSWHTR675 |
| Item model number  | CFSWHTR675 |
| Item thickness | item_thickness.string_value Inches |
| Manufacturer | Swift Response, LLC |
| Manufacturer  | Swift Response, LLC |
| Material | Hybrid Polymer |
| Measurement System | US |
| Part number | CFSWHTR675 |
| Product Dimensions | 29.21 x 4.45 x 4.45 cm; 255 g |
| Product Dimensions  | 29.21 x 4.45 x 4.45 cm; 255 g |
| Shape | Shape |
| Size | 1.75 L x 1.75 W x 11.50 H |
| Style | White, 9 oz, 1-Pack |

## Product Details

- **Brand:** Flex Seal
- **Colour:** White
- **Item form:** Liquid
- **Item weight:** 255 Grams
- **Liquid volume:** 9 Fluid Ounces

## Images

![Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61RoOD2fwCL.jpg)
![Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack - Image 2](https://m.media-amazon.com/images/I/61XrDGlDhbL.jpg)
![Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack - Image 3](https://m.media-amazon.com/images/I/810YXZgv42L.jpg)
![Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack - Image 4](https://m.media-amazon.com/images/I/81Cu4BiO0CL.jpg)
![Flex Seal Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 1-Pack - Image 5](https://m.media-amazon.com/images/I/81UhN3QFFHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***T on 22 November 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!

### ⭐⭐⭐⭐⭐ Review
*by S***A on 20 January 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

### ⭐⭐⭐⭐ Review
*by B***R on 24 November 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, 1-Pack
- ALLWAY CT31 3-in-1 Caulk Tool for Removal and Application

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**Shop now:** [https://www.desertcart.ro/products/645862098-flex-seal-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong](https://www.desertcart.ro/products/645862098-flex-seal-caulk-waterproof-and-weatherproof-hybrid-polymer-sealant-strong)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-25*