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⚓ Seal it fast, seal it strong — the marine pro’s secret weapon!
SIKAflex-291 is a premium 1-component polyurethane adhesive and sealant designed for marine applications. It offers fast curing, excellent adhesion above and below the waterline, and superior resistance to saltwater corrosion. Paintable and sandable, it delivers a professional finish while meeting ISO 9001/14001 quality standards, making it the go-to choice for boat builders and repair pros.
| ASIN | B00C501KD4 |
| Best Sellers Rank | #120,300 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #161 in Caulk |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Black |
| Colour | Black |
| Compatible Material | Metal |
| Container Type | Cartridge |
| Customer Reviews | 4.4 out of 5 stars 503 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00033886005272 |
| Included Components | Sealant |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Type Name | Adhesive |
| Item Weight | 10.1 Ounces |
| Item form | Paste |
| Manufacturer | SIKA |
| Material | Silicone |
| Material Type | Silicone |
| Model | 90923 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Water Resistant |
| Part Number | 017-90923 |
| Special features | Water Resistant |
| Specific Uses For Product | Marine |
| Specific uses for product | Marine |
| UPC | 033886005272 |
| Unit Count | 298.69 Milliliters |
| Viscosity Level | High |
| Volume | 10.1 Fluid Ounces |
| Water Resistance Level | Water Resistant |
B**R
Perfect for SportsPal aluminum canoe repair
I bought this Sika 291 to repair an aluminum canoe. This marine urethane is basically the same thing that SportsPal sells in their repair kit. I haven't used it yet but based on other reviews it will be fine for the repair I set out to accomplish Regarding other reviewers stating they received out of date or wrong colour product, I ordered black and got black and the use by date was 9 months into the future (July 2025) beyond my purchase date Nov/2024.
G**N
Greatest
Great stuff
M**S
Softer than 5200, harder than silicone
I really really like this adhesive, not as hard as 5200 harder than silicone. I potted down wires with this and the end result was exactly what I wanted.
R**A
Perfect solution for leaky boat hull
Sealed up keel board on wooden boat with this stuff. Be sure to clean all the rot out, and then clean the space well with acetone or similar. Stays flexible, but solid seal.
M**R
Bon produit, mauvaise couleur
Le produit est excellent. Toutefois, méfiez-vous, car peu importe si vous choisissez l'option blanc ou noir, vous allez obtenir du blanc par défaut... moi mon utilisation était interne dans ma coque de Sea Doo Spark, alors l'apparence ne m'importe peu, mais si la couleur est important, vaut mieux que ce soit le blanc qui vous convient...
Trustpilot
1 week ago
1 month ago