This product can be applied underwater? Or does it have to be applied and cured on a dry surface first?

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.

can this be used to repair a cracked skimmer?

I would give it a try. I used to repair a leaky exhaust port on a motor yatch.

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

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

Product ID: 41353198

Details

Brand
Underwater
Item Weight
0.27 g
Item dimensions L x W x H
9.05 x 1.95 x
Material
Acrylic
Style
Compact

🌊Seals underwater flawlessly

🔥Heat resistant up to 200°C

🧪Chemical & chlorine resistant

S$114

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Description

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

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

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.

Specifications

ASIN	B01NCUU1N1
Best Sellers Rank	#50,179 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #188 in Hardware Sealers
Brand Name	Underwater Magic
Color	White
Compatible Material	[Most Materials, Excluding Vinyl]
Customer Reviews	4.2 4.2 out of 5 stars (67)
Item Dimensions	9.05 x 1.95 x 1.95 inches
Item Form	Gel
Item Weight	0.27 g
Manufacturer	Underwater Magic
Material Type	Acrylic, Polyurethane
Model	UWM-01
Number of Items	1
Part Number	UWM-01
Style Name	Compact
Surface Recommendation	Tile, Concrete, Plastic
UPC	712190587963
Unit Count	9.8 Fluid Ounces
Water Resistance Level	Waterproof

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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The delivery time was excellent, and the packaging was secure.

2 months ago

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S$114

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

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Fast, free shipping, member pricing & priority support.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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