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⚓ Seal your marine projects with confidence and speed!
Sikaflex-291 is a black, one-part polyurethane marine adhesive and sealant designed for fast curing and durable, vibration-resistant joints. Ideal for boats and marine construction, it resists water, fuel, and corrosion while bonding a variety of materials. Delivered in a convenient 10.1 fl oz cartridge, it meets international maritime standards and offers a sandable, paintable finish for professional results.
| ASIN | B00C501KD4 |
| Amazon Bestseller | #176,610 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17,934 in Adhesives & Sealants |
| Brand Name | SIKA |
| Color | Black |
| Compatible Material | Aluminum |
| Container Type | Cartridge |
| Customer Reviews | 4.3 4.3 out of 5 stars (472) |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00033886005272 |
| Included Components | Sealant |
| Item Form | Gel |
| Item Package Quantity | 1 |
| Item Weight | 10.1 Ounces |
| Manufacturer | Sika USA |
| Material Type | Polyurethane |
| Model | 90923 |
| Other Special Features of the Product | Water Resistant |
| Specific Uses For Product | Marine |
| UPC | 033886005272 |
| Unit Count | 10.1 Count |
| Viscosity | High Viscosity Paste |
| Volume | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |
B**R
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on other reviews it will be fine for the repair I set out to accomplish Regarding other reviewers stating they received out of date or wrong colour product, I ordered black and got black and the use by date was 9 months into the future (July 2025) beyond my purchase date Nov/2024.
R**W
Each type of caulk has its own purpose and this is not structural quite obviously. I like the fact that It can be above or below the waterline but I would not ever use this below the waterline. As I suspected there are better ways; that said knowing that they don't have a problem with it being underwater makes me feel a lot better about it being above water on my deck. Acting as a sealant.
M**O
Works the way it should.
A**R
TWICE I RECEIVED AN EXPIRED PRODUCT WITH ZERO RESPONSE FROM THE COMPANY. The product arrived expired. It was expired four days before I even ordered it. Sikaflex customer service is nonexistent. They did not return any of my messages. Thankfully Amazon stepped in to have it replaced. No wonder people don't care to buy USA made products. The label very clearly states the warranty is only applicable for the product shelf life. The product quality and cure time is not guaranteed after expiration date.
P**L
Been using it for years in marine carpentry
Trustpilot
1 week ago
3 weeks ago