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๐ ๏ธ Seal the deal with Sikaflex โ where durability meets sleek, black marine style!
Sikaflex 291 Black is a high-viscosity marine-grade silicone adhesive and sealant in a 10.3 oz cartridge, designed for water-resistant sealing above the waterline. Compatible with glass, metal, and plastic, it cures fully in 3 days and is favored for marine repairs and DIY projects requiring a durable, sleek black finish.















| ASIN | B00C501KD4 |
| Best Sellers Rank | 1,194,092 in DIY & Tools ( See Top 100 in DIY & Tools ) 8,217 in Sealers |
| Brand | Sika |
| Colour | Black |
| Compatible Material | Glass, Metal, Plastic |
| Container Type | Cartridge |
| Customer Reviews | 4.3 4.3 out of 5 stars (472) |
| Full Cure Time | 3 Days |
| Global Trade Identification Number | 00033886005272 |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Volume | 10.1 Fluid Ounces |
| Item Weight | 10.1 Ounces |
| Manufacturer | Sika |
| Material | Silicone |
| Model Number | 90923 |
| Other Special Features of the Product | Water Resistant |
| Specific Uses For Product | Marine |
| UPC | 033886005272 |
| Unit Count | 300.0 millilitre(s) |
| Viscosity | High Viscosity Paste |
| Water Resistance Level | Water Resistant |
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on other reviews it will be fine for the repair I set out to accomplish Regarding other reviewers stating they received out of date or wrong colour product, I ordered black and got black and the use by date was 9 months into the future (July 2025) beyond my purchase date Nov/2024.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 day ago
3 weeks ago