Will this work to repair cracks in my pool skimmer? Is it elastic or hard like epoxy when cured?

It is elastomeric and should work well for that I would think. I used it to seal the roof seams on a 2015 GMC pickup and it worked great. Keep in mind it is self leveling so it spreads out a bit on its own.

Would this work for adhering rubber matting to a wooden and aluminum boat deck?

yes, it would work. A permanent solution would be 3M 5200 sealant. Try a small piece first!

can i use this to attach solar panels to camper roof? pnls weigh 24pnds.

I used mine for water proofing sealant while glueing down a metal flang which weighed very little. Not sure about the solar panels

Would this work in a swimming pool. I have a concrete pool that has plexiglass windows in the sides below the water level.

I believe so, we use it on the seams of our water slide that's underwater at all times.

Marine Sealant And Adhesive | Desertcart Kyrgyzstan

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

⚓ Seal your legacy with marine-grade strength and style!

EXTENDED WORK WINDOW - Long open time lets you perfect every seal without rush or mess.
EFFORTLESS APPLICATION - Compatible with manual, pneumatic, or electric piston guns for smooth, precise use.
RESILIENT ELASTIC SEAL - Vibration-resistant, non-corrosive PU formula keeps joints secure in harsh conditions.
PAINTABLE SANDABLE FINISH - Achieve a flawless, professional look—customize your project with ease.
UNMATCHED MARINE VERSATILITY - Bonds wood, fiberglass, metal—above & below waterline for ultimate durability.

Sikaflex-291 LOT is a premium white, one-component polyurethane marine adhesive and sealant designed for demanding marine and general-purpose applications. It offers long open time for flexible working, bonds a wide range of materials including wood, fiberglass, and metal, and cures to a durable, elastic, and paintable finish. Resistant to fresh and saltwater, diluted acids, and oils, it ensures lasting protection above and below the waterline. Packaged in a convenient 10.1 fl. oz cartridge, it applies easily with various piston guns, making it the go-to sealant for professionals seeking reliable, high-performance marine-grade adhesion.

Specifications

ASIN	B007H2R9SK
Best Sellers Rank	#14,575 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Polyurethane Adhesives #35 in Urethane Adhesives
Brand	SIKA
Brand Name	SIKA
Color	White
Compatible Material	Polyurethane
Container Type	Cartridge
Customer Reviews	4.5 out of 5 stars 333 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	00033886000758
Included Components	Sealant
Item Form	Paste
Item Package Quantity	1
Item Type Name	Adhesive
Item Weight	10.1 Ounces
Manufacturer	Sika USA
Material	1-C polyurethane
Material Type	1-C polyurethane
Model	90925
Number of Pieces	1
Other Special Features of the Product	Water Resistant
Part Number	90925
Special Feature	Water Resistant
Specific Uses For Product	General All-Purpose, Interior, Marine
UPC	033886002707 338860007588 033886000758 033886000741
Unit Count	10.1 Fluid Ounces
Viscosity Level	Medium to High
Volume	300 Milliliters
Warranty Description	Warranty
Water Resistance Level	Water Resistant

Reviews

A**R

30.01.2026

B**D

2.03.2024

R**Y

18.12.2025

A**R

21.12.2023

G**T

5.10.2025

A**R

17.11.2023

I**N

22.04.2024

D**S

18.08.2024

S**Y

1.01.2026

A**R

4.02.2026

D**K

23.10.2025

L**A

21.01.2025

C**N

30.10.2024

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Marine Sealant & Adhesive

Details

Details

Description

Specifications

Reviews

Common Questions