Does the black caulk dry to a gloss, or is it more matte finish, like a dull rubber?

it still retains a dark matte color I would not say dull, but not a gloss finish

Will it bond to bare aluminum to seal around the rivets?

Yes, I used it to seal my roof fans on my Sprinter. It adhered to painted metal (scored the paint), wood framing of the opening, plastic shroud and aluminum pressure plates. I am extremely satisfied with this product and from the day installed, it shows no wear even after a year. Excellent product... Another really good product is 3m 4200 Marine Adhesive...

Will this bond to rubber?

Not sure about rubber, but everything else I happened to get it on and let dry it stuck like paint. My clothes, stainless railings, fiberglass cabin, teak of course, cork fishing rod handle, my leather wallet. . .

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Marine Sealant & Adhesive

Product ID: 84441952

Details

Brand
SIKA
Item Form
Gel
Material
1-C
Special Feature
Fast Curing
Specific Uses For Product
Boating

⚓Marine-grade adhesion to gelcoat, fiberglass, metal & wood

💧Resistant to fresh & sea water, acids, oils & fuels

⏱️Fast cure time under 24 hours

250 kr

Duties & taxes included

In stock

Sold byAmazon Faroe IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚓ Seal the deal with speed and strength – your boat’s best defense!

UNMATCHED MARINE BONDING - Superior adhesion to multiple surfaces ensures your boat stays sealed through every voyage.
RAPID SEAL ZERO DOWNTIME - Fast tack-free cure accelerates your marine projects without compromising strength.
BUILT TO BRAVE THE ELEMENTS - Durability against saltwater, sewage, acids, and oils means long-lasting protection above and below waterline.
VERSATILE APPLICATION MASTERY - Squeeze or brush on with ease—paintable finish lets you customize without extra hassle.
CERTIFIED SAFE FOR LIFE ONBOARD - NSF & USDA approvals guarantee safe use around potable water and incidental food contact.

Sikaflex-291 is a professional-grade, fast-curing polyurethane marine adhesive and sealant designed for superior elasticity and vibration resistance. Compatible with fiberglass, metal, and wood, it offers exceptional durability against water, chemicals, and oils, making it ideal for above and below waterline applications. NSF and USDA approved, this 10.1 fl. oz cartridge is trusted by boat builders for reliable, long-lasting seals.

Specifications

ASIN	B01GPIXX5Y
Best Sellers Rank	#6,070 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #30 in Silicone Adhesives #47 in Adhesive Caulk #89 in Industrial Sealants
Brand Name	SIKA
Color	White
Compatible Material	Fiberglass, Metal, Wood
Container Type	Cartridge
Customer Reviews	4.6 4.6 out of 5 stars (1,335)
Included Components	10.1 fl oz Cartridge
Item Form	Gel
Item Package Quantity	1
Item Type Name	Adhesive
Item Weight	300 g
Manufacturer	Sika USA
Material Type	1-C polyurethane
Model	90919
Number of Pieces	1
Other Special Features of the Product	Fast Curing
Part Number	90919
Specific Uses For Product	Boating
Tensile Strength	260 kips_per_square_inch
UPC	033886005258
Unit Count	10.1 Fluid Ounces
Viscosity Level	Medium
Volume	10.1 fluid ounces
Water Resistance Level	Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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