I am replacing the roof vents on my 5th wheel. Is this what I need to place over the metal flange and roof interface?

Yes, this is what I have used and then use a self-leveling sealer over the top of the screws and edges of the vent.

Could this product be applied under water? I.E. Swimming Pools?

Jamie Hyneman of Mythbusters use to use it in the Caribbean to repair boat leaks outside the boat in the water. This was according to Adam Savage in a You Tube build video. https://youtu.be/YZV4A4Kl0yM?t=1521

Is this made in China?

Technical details upon this listing state "Country of Origin - USA"

Will this product work on small concrete/masonry wall cracks?

I guess to waterproof as it is very maluable

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Description

🔧 Seal smart, seal fast — never miss a gap again!

SEAMLESS 30 FOOT ROLL - Work faster with no skips or runs in your seal
FLEXIBLE ELASTOMER ADHESIVE - Strong yet adaptable bonding on unique joint shapes
DOUBLE BARRIER LEAK PROTECTION - Combine with compatible products for permanent, watertight seals
UNIVERSAL SURFACE COMPATIBILITY - Adheres smoothly to both flat and irregular surfaces
PRECISION FIT FOR COMPLEX JOINTS - Perfect for skylights, frames, and unusual patterns

Dicor BT-1834 Butyl Seal Tape is a 30-foot continuous roll of high-adhesion elastomer tape designed for quick, gap-free sealing on unique and irregular joint shapes. Its flexible adhesive ensures strong bonds on smooth or uneven surfaces, providing a durable double barrier against leaks. Ideal for professional-grade sealing on skylights, frames, and complex patterns, this tape delivers efficient installation and lasting protection.

Specifications

Manufacturer	Dicor
Part number	BT-1834-1
Item Weight	816 g
Product Dimensions	17.78 x 17.78 x 3.3 cm; 816.47 g
Is Discontinued By Manufacturer	No
Size	1 Pack
Color	Butyl
Style	1/8インチ x 3/4インチ x 30フィート。
Material	エラストマー
Item Thickness	0.12 Inches
Special Features	ユニークな形状のジョイントシール、クイックインストール、不規則な表面への適合、二重バリアリーク保護。
Included Components	ブチルテープ。
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	17.8 x 17.8 x 3.3 cm

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