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⚓ Seal your voyage with confidence—marine-grade strength meets professional finesse!
Sika Sikaflex 291i is a 300 ml multifunctional marine adhesive sealant designed for professional boat applications. It offers a highly elastic, vibration-resistant bond with 1.8 MPa tensile strength, is Wheelmark approved for UK and EU marine safety standards, and features a low-odor, solvent-free formula safe for indoor use. Compatible with multiple materials, it cures to a paintable, non-sagging finish, making it the go-to sealant for durable, reliable marine repairs.















| Asin | B00F6WRY42 |
| Best Sellers Rank | 3,061 in DIY & Tools (See Top 100 in DIY & Tools) 62 in Sealers |
| Brand | Sika |
| Colour | White |
| Compatible Material | Metal |
| Container Type | Cartridge |
| Customer Reviews | 4.6 4.6 out of 5 stars (800) 4.6 out of 5 stars |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 07612894815153 |
| Included Components | 1 cartridge |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | Bonding Agent SIKA291 |
| Item Volume | 300 Millilitres |
| Item Weight | 414 Grams |
| Manufacturer | Solar Technology |
| Manufacturer Contact Information | Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW |
| Manufacturer Part Number | SIKA291 |
| Material | Metal |
| Model Number | 291i |
| Number Of Pieces | 1 |
| Other Special Features Of The Product | solvent-free, low-odor, non-corrosive, vibration-resistant, highly elastic, Wheelmark-approved, specifically designed for marine applications |
| Specific Uses For Product | Marine |
| Tensile Strength | 1.8 Megapascals |
| Unit Count | 300.0 millilitre |
| Viscosity Level | Medium |
| Water Resistance Level | Water Resistant |
User
Fix hatch on my kayak
Tube was easy to use in my application gun and spreads pretty good nice and smooth. Very messy for hands so ensure you wear gloves you can throw away after use. It glues well to your hands and taking 2 days to fade lol.But seems to have done a good job fixing both of my hatches down onto my kayak.Had a slight leak in the seals thought I'd fix it in readiness for next season.I read great reviews and this is mentioned as the best as its designed for boats and has resistance to salt water and fresh all good, the adhesion to plastic was reviewed as really good on other Google review sites not amazon by the way.I've water tested my kayak with water around the seal a good finish no leaks then I chucked z good size bucket of water as a sort of pressure test gave it a good dowsing of water all good no leaks ... I'd tell anyone to buy its worth the extra money. How long will it last hoping few years, plenty left in the tube.Drying time not on the tube but reviews on a Google search said 24 hrs mine was curing in few hours and after 16hrs I was water testing it so its decent.Just messy be prepared to get this stuff in places you didn't want it.I applied a bit too much and white spirits helped clean up a bit.You don't need loads on lesson learnt the second hatch I fitted to my kayak I used less and its sealed well be aware when you apply force if doing a kayak excess Sealand also goes inside the kayak so I got it on my arms and hands without realising it had gone inside kayak hatch rim lol.Enjoy using it havd gun and if fitting to a kayak hatch like me it's good buy it just take it from me less is better.. Next time thin the amount out on kayak lip... im not a robot really used this gloop highly recommend if you need eater tight. Kev
User
Does the job
Sika is good stuff in the marine world
User
Decent, thick adhesion
Thought this was really decent, time will tell if it’s any good from a longevity perspective, but I need a product to hold the some aco drains together especially as the builder decided to silicone some corners together. I feel like most builders best friend is silicone. It literally is their answer to most adhesions challenges. I digress, but seriously this felt like a really good, thick product. I removed all the silicone and effectively glued everything back together using this. It’s now been 3 weeks and everything still remains decent.
User
Used this product for over 20 years
I have been using this product for over 20 years, it does a good job and I would not buy another product.
User
Quality
Good product
User
Good
Used to seal on some fixings to a transom...good stuff
User
Kayaking hulls love it
I bought this for my kayak, the dry hatches were leaking badly as the seals were original in places and repaired in others with bathroom silicone. After some elbow grease the hatch's were resealed and water thight. Delighted with the sealant.The prosEasy to useSeals to PE plastic and dense foam in kayaksNo fumes or bad smellsConsYou will need a silicon gun (borrow from a friend, like I did).If it gets onto skin it's a divel to get off.
User
Sealant
Excellent
User
Bonne qualité
Correspond à la description Livraison rapide
User
Muito boa qualidade para o efeito.
Usei este produto num barco em madeira. A madeira ainda estava húmida por dentro, mas o produto funcionou na perfeição. recomendo.
User
ottimo
ottimo
User
Tre content
Rien a dire sikaflex grosse marque
User
Conheça o selante que salvou meu barco
Olá! Avaliando o selante: O produto superou as minhas expectativas! A secagem foi rápida, portanto recomendo a compra desse produto.
Trustpilot
3 weeks ago
3 days ago