Sikaflex 291BK Marine Polyurethane Adhesive / Sealant – Black, 70 ml Mini Sausage
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You have 30 days to request a return. All sale items are final sale.
Sikaflex 291BK – Marine Polyurethane Adhesive & Sealant, Black, 70 ml Mini Sausage
Sikaflex 291BK in the 70 ml mini sausage format delivers the same proven one-component, moisture-curing polyurethane formula as the full cartridge — in a compact size ideal for small jobs, touch-ups, and tight access areas. It cures to a durable, flexible, waterproof seal that stands up to UV exposure, saltwater, and vibration. The black colour integrates cleanly with dark hull sides, black hardware, and teak-trimmed surfaces.
Key Features
- One-component — no mixing, ready to apply
- Fast cure, medium modulus — flexible bond that moves with the boat
- Low viscosity — flows into tight joints and irregular surfaces
- Excellent adhesion to fibreglass, wood, metals, and most plastics
- Resistant to UV, saltwater, fuel splash, and weathering
- Paintable after full cure
- 70 ml mini sausage — ideal for small repairs and precision application
- Black colour — suits dark hardware, teak trim, and black hull accents
Compatible Applications
- Small deck hardware bedding and touch-up sealing
- Portlight and hatch frame sealing
- Through-hull fittings and port lights
- Teak trim and dark-coloured hardware installations
- Tight-access joints where a full cartridge is impractical
- General above-waterline sealing and bonding
Parts Desk Insights
The mini sausage format is the right choice for single-use repairs, small hardware installs, or any job where a full 11 oz. cartridge would go to waste. Customers doing one-off stanchion base re-beds or portlight reseals consistently prefer this size to avoid wasted product. For larger projects or full installations, the Sikaflex 291BK 11 oz. cartridge is more economical. Need a different colour in the same mini sausage format? See Sikaflex 291WH White, 70 ml. For grey deck surfaces, the Sikaflex 291GR Grey, 11 oz. is available in full cartridge size.
Related Products
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.