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: 460131127

Details

Brand
Underwater
Item dimensions L x W x H
23 x 5 x 5
Item weight
0.01 Ounces
Material
Acrylic
Style
Compact

🌊Seals underwater flawlessly

🔥Heat resistant up to 200°C

🧪Chemical & chlorine resistant

€ 162.45

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

GAP FILLING POWER - Fills up to 40mm gaps with permanent elasticity and abrasion resistance.
MESS FREE APPLICATION - Odorless, no solvents, no silicone contamination—safe for pools in use.
TEMPERATURE TOUGHNESS - Withstands extreme temps from -40°C to 200°C for versatile use.
CHEMICAL CHLORINE SHIELD - Resists harsh pool chemicals and seawater for lasting durability.
UNMATCHED UNDERWATER PERFORMANCE - Works perfectly even submerged—no drying out, no slipping.

Underwater Magic Sealant is a 290ml white, one-component acrylic-polyurethane gel designed for professional-grade sealing underwater and above. Trusted by commercial divers, it resists chlorine, saltwater, chemicals, UV, and extreme temperatures, while remaining odorless and solvent-free. Ideal for pools, marine repairs, and chemical-exposed surfaces, it fills large gaps with permanent elasticity and is compatible with standard caulking guns.

Specifications

ASIN	B01NCUU1N1
Best Sellers Rank	#93,259 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #211 in Silicone Sealers
Brand	Underwater Magic
Brand Name	Underwater Magic
Color	White
Compatible Material	Various
Item Dimensions	23 x 5 x 5 centimeters
Item Form	Gel
Item Weight	0.01 Ounces
Item dimensions L x W x H	23 x 5 x 5 centimeters
Item weight	0.01 Ounces
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	289.82 Milliliters
Water Resistance Level	Waterproof
Water resistance level	Waterproof

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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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The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

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Excellent communication throughout the order process. Product is perfect.

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€ 162.45

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Fantastic and great service. Shipping was faster than expected.

1 week ago

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