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

⏳4-hour skinning time

🌊Fresh & saltwater resistant

🛠️Multi-surface adhesion

NZ$47

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Description

⚓ Seal your marine projects with confidence — the black magic of lasting bonds!

PAINT SAND READY - Cures to a stable finish that can be painted or sanded without compromising strength.
EFFORTLESS PRECISION - Compatible with manual, pneumatic, or electric piston guns for clean, professional application.
MARINE GRADE MASTERY - Seamlessly bonds wood, fiberglass & metal above or below waterline for ultimate durability.
ALL WEATHER APPLICATION - Works perfectly even in cooler temps with a generous working time to get it right.
ELASTIC VIBRATION RESISTANT - Non-corrosive, flexible sealant that withstands movement and harsh marine conditions.

SIKA Sikaflex-291 LOT is a premium black, one-component polyurethane marine adhesive and sealant designed for wood, fiberglass, and metal. It offers exceptional elasticity, corrosion resistance, and durability in fresh and saltwater environments. With a 4-hour skinning time and full cure in 24 hours, it can be painted and sanded for a flawless finish. Ideal for professional-grade marine construction and repair, it applies easily via various piston guns, ensuring a secure, vibration-resistant seal above or below the waterline.

Specifications

ASIN	B00C50GIQI
Best Sellers Rank	#23,062 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Polyurethane Adhesives #54 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 (364)
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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NZ$47

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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