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: 582321256

Details

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

💧Water-resistant formula

🧴Compact 290ml tube

⚙️Polyurethane durability

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฿12683

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
Underwater
Item dimensions L x W x H
23 x 5 x 5
Item weight
0.01 Ounces

Description

💦 Seal the deal beneath the waves with Underwater Magic!

PRO LEVEL SEALANT - Trusted by underwater camera pros for reliable performance
COMPACT CONVENIENT - 290ml tube fits perfectly in your toolkit or dive bag
DURABLE POLYURETHANE PASTE - Engineered for long-lasting, flexible adhesion
MULTI SURFACE COMPATIBILITY - Ideal for tile, concrete, and plastic surfaces (just not vinyl!)
SEAMLESS UNDERWATER PROTECTION - Ensures a watertight seal for your aquatic gear

Underwater Magic Sealant is a 290ml white polyurethane paste designed for water-resistant sealing on tile, concrete, and plastic surfaces. Compact and durable, it provides a reliable watertight bond ideal for underwater camera housing accessories, though it is not compatible with vinyl materials.

Specifications

ASIN	B01NCUU1N1
Brand	Underwater Magic
Colour	White
Compatible Material	Not Vinyl
Item Dimensions	23 x 5 x 5 centimetres
Item Form	Paste
Item Weight	0.01 Ounces
Manufacturer	Underwater Magic
Manufacturer Part Number	UWM-01
Material	Polyurethane
Model Number	UWM-01
Number of Items	1
Style Name	Compact
Surface Recommendation	Tile, Concrete, Plastic
UPC	712190587963
Unit Count	289.8206 millilitre
Water Resistance Level	Water Resistant

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