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⚓ Seal your marine projects with confidence—where durability meets precision!
SIKA Sikaflex-291 LOT is a premium one-component polyurethane marine sealant designed for superior adhesion to common marine materials. It offers a long working time with a 4-hour skinning period, is resistant to fresh and saltwater, and cures to a paintable, sandable finish. Ideal for both above and below waterline applications, it delivers durable, vibration-resistant seals with easy application via various piston guns.
| ASIN | B007H2R9SK |
| Best Sellers Rank | #29,760 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Polyurethane Adhesives #61 in Urethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | White |
| Compatible Material | Polyurethane |
| Container Type | Cartridge |
| Customer Reviews | 4.6 out of 5 stars 365 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 ml |
| Warranty Description | Warranty |
| Water Resistance Level | Water Resistant |
G**T
This is worth every penny
Best stuff for outdoor applications
O**O
Excelente artículo, lo volvería a comprar
Muy bueno, aunque debe saber que demora unas 48 horas para que seque bien y más si es muy grande el grosor que aplicó pero calidad extrema
J**T
White Caulk for the win
Best caulk I’ve ever had the pleasure to work with. Filled the cracks like none other. You know, I was debating the Black Caulk, because I thought it might be more filling, but the white Marine Caulk, was enough to get the job done.
A**R
On time
Great for the boat seams
A**R
Good adhesive for a boating project
I used this to attach a heavy duty rub rail on my old BW Outrage (belt and suspenders approach, I didn't trust that the screws that came with the rub rail would work). It's been six months since I did the work and it seems to be holding well. Cures somewhat quickly which makes it tricky to use on a large area in summer heat. I'd use it again before the #M product.
J**B
as described
as described
B**D
Easy to apply, looks like a good seal
I used it to seal between the body and the bottom pan of a 1970s VW Beetle I'm rebuilding. It'll take me months to find if the seal provided by this product is durable. But for now, it looks encouraging. Also, it is rated for "below the waterline", and that should be more than sufficient overkill for a Volkswagen. As I had to apply the sealant from below the car, it dripped a little bit but not badly. The product flows into place readily and can be smoothed, like caulk, with a gloved (!!!) finger. Go without gloves and have a very messy clean-up coming. The product dries to a deep glossy black. As it is paintable, I plan to spray the bottom of the car with undercoating for protection. The seals cured overnight and look confidence-inspiring.
A**R
👍
👍
S**V
Works well
Works well, strong adhesion & hard cured coating
S**Y
Good product
Good product.
S**.
A1 ++
Toujours le best pour les bateaux!
P**E
Automotive trim seal
Best product for my application
A**R
Used for wetsuits
Excellent product for gluing storage pockets onto wetsuits or for neoprene repair.
Trustpilot
5 days ago
4 days ago