---
product_id: 586773446
title: "DEMSUN M18 Siliconized Acrylic Sealant 310ml White - One-Component, Waterproof, Overpaintable, Low VOC, Easy Application, Flexible, Crack Filler, Ideal for Windows, Doors, Walls, Ceilings & Joints"
brand: "demsun"
price: "R508"
currency: ZAR
in_stock: true
reviews_count: 7
url: https://www.desertcart.co.za/products/586773446-demsun-m18-siliconized-acrylic-sealant-310ml-white-one-component-waterproof
store_origin: ZA
region: South Africa
---

# Low VOC Waterproof After Curing Exceptional Adhesion DEMSUN M18 Siliconized Acrylic Sealant 310ml White - One-Component, Waterproof, Overpaintable, Low VOC, Easy Application, Flexible, Crack Filler, Ideal for Windows, Doors, Walls, Ceilings & Joints

**Brand:** demsun
**Price:** R508
**Availability:** ✅ In Stock

## Summary

> Seal the Deal! 🛠️ Your Go-To for All Things Waterproof!

## Quick Answers

- **What is this?** DEMSUN M18 Siliconized Acrylic Sealant 310ml White - One-Component, Waterproof, Overpaintable, Low VOC, Easy Application, Flexible, Crack Filler, Ideal for Windows, Doors, Walls, Ceilings & Joints by demsun
- **How much does it cost?** R508 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/586773446-demsun-m18-siliconized-acrylic-sealant-310ml-white-one-component-waterproof)

## Best For

- demsun enthusiasts

## Why This Product

- Trusted demsun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Use:** Perfect for all porous surfaces—brick, wood, and more.
- • **Eco-Conscious Choice:** Low VOC for a healthier planet.
- • **Odor-Free Experience:** Work comfortably without unpleasant smells.
- • **Unmatched Flexibility:** Handles movements up to 15% with ease.
- • **Effortless Application:** Paintable and easy to clean for a seamless finish.

## Overview

The Demsun M18 Siliconized Acrylic Sealant is a one-component, eco-friendly solution designed for superior adhesion and flexibility. With a low VOC content, it’s perfect for various applications, including windows, doors, and walls. Once cured, it becomes waterproof and can be easily painted over, making it an ideal choice for both professionals and DIY enthusiasts.

## Description

DEMSUN M18 Siliconized Acrylic Sealant 310ml White - One-Component, Waterproof, Overpaintable, Low VOC, Easy Application, Flexible, Crack Filler, Ideal for Windows, Doors, Walls, Ceilings & Joints

## Features

- ✅ Exceptional Adhesion and Elasticity: Demsun M18 is fortified with silicone emulsion, ensuring superior adhesion and impressive elasticity.
- ✅ Handles Movements Up to 15%: Its siliconized structure allows it to handle movements up to 15%, making it suitable for various applications.
- ✅ Eco-Friendly and Low VOC: This water-based, non-toxic sealant boasts very low VOC content, ensuring it's environmentally friendly.
- ✅ Waterproof After Curing: Once cured, Demsun M18 becomes waterproof, offering reliable protection against moisture.
- ✅ Paintable and Easy to Clean: You can easily paint over it, and its user-friendly application and cleaning process save you time and effort.
- ✅ Versatile on All Porous Surfaces: Ideal for use on brick, concrete, wood, and more, making it a versatile choice for your projects.
- ✅ Odor-Free: Demsun M18 leaves no unpleasant odors behind, ensuring a comfortable working environment.
- ✅ Wide Range of Applications: Perfect for sealing low movement joints, windows, walls, doors, and filling cracks in walls and ceilings.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Demsun |
| Part number | DS03101 |
| Item Weight | 530 g |
| Package Dimensions | 30.9 x 4.7 x 4.4 cm; 530 g |
| Manufacturer reference | DS03101 |
| Style | Compact |
| Material | Acrylic |
| Included components | Demsun M18 |

## Images

![DEMSUN M18 Siliconized Acrylic Sealant 310ml White - One-Component, Waterproof, Overpaintable, Low VOC, Easy Application, Flexible, Crack Filler, Ideal for Windows, Doors, Walls, Ceilings & Joints - Image 1](https://m.media-amazon.com/images/I/61tDf+5JxfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great
  

*by S***E on Reviewed in the United Kingdom on 16 June 2024*

Great

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    This is white and I thought it would be clear but it'll come in for a different job
  

*by P***Y on Reviewed in the United Kingdom on 29 July 2024*

okay

### ⭐ 1.0 out of 5 stars







  
  
    Not water proof
  

*by T***N on Reviewed in the United Kingdom on 30 April 2024*

Used this to  seal a  spot in my kitchen to prevent leaks  , gave it 3 days to cure , then when washing dishes I found it dissolves when exposed to water.

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**Shop now:** [https://www.desertcart.co.za/products/586773446-demsun-m18-siliconized-acrylic-sealant-310ml-white-one-component-waterproof](https://www.desertcart.co.za/products/586773446-demsun-m18-siliconized-acrylic-sealant-310ml-white-one-component-waterproof)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-04-24*