Sikaflex 291 LOT Marine Adhesive / Sealant – White, 11 oz. Cartridge (884-291LOTWH)
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Sikaflex 291 LOT Marine Adhesive / Sealant – White, 11 oz. Cartridge
Sikaflex 291 LOT is a one-component, moisture-curing polyurethane adhesive and sealant formulated with a longer open time and reduced surface tack compared to standard Sikaflex 291. The extended working time makes it easier to tool joints, position hardware, and clean up squeeze-out before the material skins over — a meaningful advantage on larger sealing jobs or in warm conditions where standard 291 cures quickly.
Slightly more flexible than standard 291, it is well suited to hull seams, rub rails, and applications where the joint sees regular movement. It cures to a durable, paintable, watertight seal resistant to UV, saltwater, and fuel splash.
Compatible Applications
- Hull seams and below-waterline sealing
- Through-hull fittings
- Rub rail bedding and installation
- Deck hardware bedding (cleats, hatches, stanchion bases)
- Portlights and cabin windows
- General above- and below-waterline sealing on fiberglass, wood, and metal
Key Features
- One-component — no mixing required
- Longer open/working time than standard Sikaflex 291
- Slightly more flexible than standard 291 — ideal for moving joints
- Moisture-activated cure
- Paintable after cure
- Resistant to UV, saltwater, and fuel splash
- 11 oz. (310 ml) standard cartridge — fits standard caulking guns
- SKU: 884-291LOTWH
Related Products
- Sikaflex 291 White – 11 oz. Cartridge (standard formula)
- Sikaflex 291 White – 70 ml Mini Sausage
- Sikaflex 291 Black – 11 oz. Cartridge
- Sikaflex 292 Polyurethane – White, 10.3 oz. Cartridge (structural grade)
- Sikaflex 205 Primer – 250 ml
Parts Desk Insights
The 291 LOT formula is the best choice when you need more time to work the joint — particularly on rub rail installations, long hull seams, or any application where you’re tooling a lot of material before it skins. In warm weather, standard Sikaflex 291 can skin faster than expected; the LOT formula gives you a more forgiving window. For single-use or tight-space jobs, the 70 ml mini sausage in standard 291 is a better fit. For structural bonding requiring higher strength, step up to Sikaflex 292.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.