---
product_id: 41353198
title: "Sealant, 290ml/9.8oz Tube, White"
brand: "underwater magic"
price: "S$117"
currency: SGD
in_stock: true
reviews_count: 8
category: "Underwater Magic"
url: https://www.desertcart.sg/products/41353198-sealant-290ml-9-8oz-tube-white
store_origin: SG
region: Singapore
---

# Seals underwater flawlessly Heat resistant up to 200°C Chemical & chlorine resistant Sealant, 290ml/9.8oz Tube, White

**Brand:** underwater magic
**Price:** S$117
**Availability:** ✅ In Stock

## Summary

> 🌊 Seal the impossible—underwater magic that sticks like a pro!

## Quick Answers

- **What is this?** Sealant, 290ml/9.8oz Tube, White by underwater magic
- **How much does it cost?** S$117 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/41353198-sealant-290ml-9-8oz-tube-white)

## Best For

- underwater magic enthusiasts

## Why This Product

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

## Key Features

- • **Chemical Armor:** Resists chlorine, saltwater, oils & acids for lasting durability
- • **Long-Lasting Elasticity:** Permanently flexible with abrasion resistance for tough environments
- • **User-Friendly Application:** Standard 290ml tube fits any caulking gun—no mixing, no mess
- • **Unmatched Underwater Bonding:** Seals leaks even submerged, no drying needed
- • **Extreme Temperature Tolerance:** Works from -40°C to +200°C for versatile applications

## Overview

Underwater Magic Sealant is a professional-grade, 290ml white gel designed to create permanent, elastic seals underwater and in harsh chemical environments. Trusted by commercial divers, it withstands chlorine, saltwater, oils, and extreme temperatures (-40°C to +200°C). Easy to apply with standard caulking guns, it fills gaps up to 40mm and remains durable without silicone or harmful solvents. Ideal for pools, marine repairs, and industrial sealing where reliability and longevity are non-negotiable.

## Description

Like all great inventions, Underwater Magic was born from a need. The need for a glue that could perform as well under water as above it. And one that would enable us to bring together those two worlds with astonishing results.Underwater Magic is based on a formula already used by commercial divers to seal ship leaks, under strict maritime authority regulations on site at the port or out on the open sea.Further development of the product's formula made it not only suitable for seawater, it is also resistant against chlorine water and other chemicals.Underwater Magic is a 1 component sea and chlorine water resistant glue, which even seals underwater. It is odour free, it's free of: Oxime - acetic acid - isocyanate solvents , 100% silicone free and Is not affected by: chlorine / salt (sea) water, weathering and uv light, Aliphatic solvents, oils, grease, diluted inorganic acids and alkalis.Permanently elastic with good abrasion resistance and good mechanical properties. Temperature resistant from -40C/F degrees to +90C / +194F, for a short time ( 2 to 3 hours) even to +200C / +392F, can fill gaps of up to 40 mm and is allowed in areas close to food.Underwater Magic comes in a Standard 'Silicone tube size' used with a standard caulcking gun with a filling of 290ml (approx. 9.8 US fl. oz.) or as 600ml bag (approx 20.29 US fl. oz.). No complicated mixing; No clouds in your pool; Use it while your pool is in use; No silicone contamination; Long lasting;Note: This product is not compatible with vinyl.

Review: Expensive but works - Seals well..needs to cure before pressure in pipes
Review: Best underwater sealant for leaks on a fiberglass pool and the skimmer. - I have a decades old fiberglass pools with multiple leaks. The wall has a hairline crack. Easily plugged with this sealant, even under water. I also had multiple cracks in the skimmer. I had to use my finger to apply chunks of the sealant until all cracks were sealed. Now a year later, those seals are still holding up. This product is much better than all other submarine sealants or cements I have tried on desertcart. It really seals tight and lasts very long. There are two drawbacks. First, it is expensive. Second, it is very thick and very hard to push it out of the tube, even with a caulking gun. Once opened, you are most likely unable to use the remaining that is still in the tube. This is why I am only giving 4-star rating. I am ordering a new tube to work on a new leak and add new layers on old leaks.

## Features

- Sealant, Underwater Magic, 290ml/9.8oz Tube, White.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01NCUU1N1 |
| Best Sellers Rank | #51,424 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #183 in Hardware Sealers |
| Brand | Underwater Magic |
| Brand Name | Underwater Magic |
| Color | White |
| Compatible Material | [Most Materials, Excluding Vinyl] |
| Customer Reviews | 4.3 out of 5 stars 64 Reviews |
| Item Dimensions | 9.05 x 1.95 x 1.95 inches |
| Item Form | Gel |
| Item Weight | 0.27 g |
| Item dimensions L x W x H | 9.05 x 1.95 x 1.95 inches |
| Manufacturer | Underwater Magic |
| Material | Acrylic , Polyurethane |
| Material Type | Acrylic, Polyurethane |
| Model | UWM-01 |
| Number of Items | 1 |
| Part Number | UWM-01 |
| Style | Compact |
| Style Name | Compact |
| Surface Recommendation | Tile, Concrete, Plastic |
| UPC | 712190587963 |
| Unit Count | 9.8 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Underwater Magic
- **Item Weight:** 0.01 Ounces
- **Item dimensions L x W x H:** 9.05 x 1.95 x 1.95 inches
- **Material:** Acrylic, Polyurethane
- **Style:** Compact

## Images

![Sealant, 290ml/9.8oz Tube, White - Image 1](https://m.media-amazon.com/images/I/51Iadn0ZV0L.jpg)

## Questions & Answers

**Q: Can it be used to replace a tile**
A: No, it’s a strong sealant.

**Q: This product can be applied underwater?  Or does it have to be applied and cured on a dry surface first?**
A: Yes, can applied under water. I got piping that have very small water leaked that is why I bought this one. I applied and it seems it stop the leaked up to now. Hope this helps.

**Q: can this be used to repair a cracked skimmer?**
A: I would give it a try. I used to repair a leaky exhaust port on a motor yatch.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Expensive but works
*by G***N on June 2, 2026*

Seals well..needs to cure before pressure in pipes

### ⭐⭐⭐⭐ Best underwater sealant for leaks on a fiberglass pool and the skimmer.
*by X***S on June 12, 2025*

I have a decades old fiberglass pools with multiple leaks. The wall has a hairline crack. Easily plugged with this sealant, even under water. I also had multiple cracks in the skimmer. I had to use my finger to apply chunks of the sealant until all cracks were sealed. Now a year later, those seals are still holding up. This product is much better than all other submarine sealants or cements I have tried on Amazon. It really seals tight and lasts very long. There are two drawbacks. First, it is expensive. Second, it is very thick and very hard to push it out of the tube, even with a caulking gun. Once opened, you are most likely unable to use the remaining that is still in the tube. This is why I am only giving 4-star rating. I am ordering a new tube to work on a new leak and add new layers on old leaks.

### ⭐⭐⭐⭐⭐ Expensive, but worth it!
*by S***N on January 31, 2026*

It really works!

## Frequently Bought Together

- Underwater Magic Sealant, 290ml/9.8oz Tube, White
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-07-27*