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.

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SIKA Sikaflex-291 LOT Black, All-Purpose Marine Adhesive & Sealant, Elastic & Non-Corrosive - 10.1 fl. oz - Ideal for Wood, Fiberglass, Metal, Fresh & Saltwater Applications

SIKA Sikaflex-291 LOT Black, All-Purpose Marine Adhesive & Sealant, Elastic & Non-Corrosive - 10.1 fl. oz - Ideal for Wood, Fiberglass, Metal, Fresh & Saltwater Applications

Product ID: 26693033

Details

Brand
SIKA
Item Form
Paste
Material
1-C
Special Feature
Water
Specific Uses For Product
Marine

⚡High elasticity & vibration resistance

🌊Marine-grade water resistance

🛠️One-component easy application

C$2187

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Description

⚓ Seal your marine projects with confidence—where durability meets sleek performance!

ALL WEATHER RESILIENCE - Resists fresh & saltwater, diluted acids, and fuels—built to withstand harsh environments.
EFFORTLESS APPLICATION - Compatible with manual, pneumatic, or electric piston guns for smooth, precise sealing.
ULTIMATE MARINE BONDING - Adheres flawlessly to wood, fiberglass, and metal for unbeatable marine durability.
PAINTABLE SANDABLE FINISH - Cures to a stable, black sealant that can be overpainted and sanded for a professional look.
VIBRATION RESISTANT ELASTICITY - Maintains flexible, non-corrosive seals that absorb shocks and vibrations on decking and joints.

SIKA Sikaflex-291 LOT is a premium black, one-component polyurethane marine adhesive and sealant designed for wood, fiberglass, and metal surfaces. It offers superior elasticity, water resistance (fresh and salt), and chemical resistance, curing fully in 24 hours with a paintable, sandable finish. Ideal for above and below waterline applications, it ensures vibration-resistant, non-corrosive seals with easy application via various piston guns.

Specifications

ASIN	B00C50GIQI
Best Sellers Rank	#22,447 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #15 in Polyurethane Adhesives #55 in Urethane Adhesives
Brand Name	SIKA
Color	Black
Compatible Material	Fiberglass, Metal, Wood
Container Type	Cartridge
Customer Reviews	4.6 4.6 out of 5 stars (363)
Full Cure Time	24 hours
Included Components	Sealant
Item Form	Paste
Item Package Quantity	1
Item Type Name	Adhesive
Item Weight	10.1 ounces
Manufacturer	Sika USA
Material Type	1-C polyurethane
Model	90927
Number of Pieces	1
Other Special Features of the Product	Water Resistant
Part Number	90927
Specific Uses For Product	Marine, Underwater
UPC	033886005289
Unit Count	10.1 Fluid Ounces
Viscosity Level	Medium to High
Volume	10.1 fluid ounces
Warranty Description	Warranty
Water Resistance Level	Water Resistant

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C$2187

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered 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 Nicaragua.

Secure transaction

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