---
product_id: 17949646
title: "SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge"
brand: "sika"
price: "28743CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Sika"
url: https://www.desertcart.sn/products/17949646-sika-sikaflex-291-black-fast-cure-marine-adhesive-and-sealant
store_origin: SN
region: Senegal
---

# Marine-grade polyurethane Water & saltwater resistant Cures skin in ~60 mins SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge

**Brand:** sika
**Price:** 28743CFA
**Availability:** ✅ In Stock

## Summary

> ⚓ Seal the deal with speed and strength – your boat’s best kept secret!

## Quick Answers

- **What is this?** SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge by sika
- **How much does it cost?** 28743CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/17949646-sika-sikaflex-291-black-fast-cure-marine-adhesive-and-sealant)

## Best For

- sika enthusiasts

## Why This Product

- Trusted sika brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Paint-Ready Finish:** Sands smooth and accepts paint for a professional, seamless look
- • **Fast-Track Your Fixes:** Cures quickly on contact with moisture for rapid project completion
- • **Waterproof Confidence:** Resists fresh and saltwater damage plus limited fuel and oil exposure
- • **Effortless Application:** Compatible with manual, pneumatic, and electric guns for precision control
- • **Built for the Brutal Seas:** Marine-grade polyurethane ensures durable, vibration-resistant seals

## Overview

SIKA Sikaflex-291 is a fast-curing, one-component polyurethane adhesive and sealant designed specifically for marine environments. It forms strong, elastic, and vibration-resistant bonds that withstand fresh and saltwater exposure, fuels, and oils. The product cures to a paintable finish within 60 minutes, offers long-lasting durability against corrosion and environmental wear, and is easy to apply using standard cartridge guns. Ideal for professional-grade boat construction and repairs, it meets international maritime standards and delivers reliable waterproof sealing every time.

## Description

For secure seals in a marine environment that won't degrade due to water exposure, Sikaflex-291 adhesive and sealant offers an optimal solution. It's an all-purpose sealant that creates strong, stable bonds to a wide range of common marine construction surfaces, including wood, metal, ceramic materials, plastics, and metal primers and paint coatings. It's ideal for elastic and vibration-resistant joint seals or for a range of interior applications. Once applied, the sealant can be sanded and finished with paint for a truly professional sheen. Satisfies the International Maritime Organization standards and ISO 9001 / 14001.

Review: Easy way to fix the rain sensor . - Works as advertised and is really easy to do. The hardest Part is to get the cover off from the Mirror assembly, but even that was easy. There is not much needed and with a 3 year Shelf life, you have enough left in the tubes to get it done again if needed. Great Product. I would recommend this over fixed gel pads that never will connect to the surfaces as this liquid is doing. Actually there was a gel pad installed before and it failed. That’s why I had to do this in the first place. Definitely recommend this product.
Review: Softer than 5200, harder than silicone - I really really like this adhesive, not as hard as 5200 harder than silicone. I potted down wires with this and the end result was exactly what I wanted.

## Features

- THE CHOICE FOR BOATS — Formulated for use in marine construction, this one-component polyurethane adhesive creates a strong, elastic, and vibration-resistant joint seal
- CURES QUICKLY FOR FAST JOBS — Begins to cure immediately upon exposure to atmospheric moisture and develops a skin within approximately 60 minutes, depending on environmental factors such as humidity
- HIGH RESISTANCE TO WATER DAMAGE — Whether fresh or salt water, this Sikaflex marine sealant resists damage and maintains peak performance. It's also resistant for limited periods to fuels and oils
- DURABLE AND NON-CORROSIVE — Sika-291 marine sealant and adhesive won't wear away due to exposure to the elements or to most diluted acids or caustic solutions. Enjoy long-lasting performance
- QUICK AND EASY — Sikaflex-291 comes in a conveniently-sized cartridge that connects to manual, pneumatic, and electric-driven piston guns. Simply point it where you want it to go

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C501KD4 |
| Best Sellers Rank | #6,614 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Polyurethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Black |
| Compatible Material | Aluminum |
| Container Type | Cartridge |
| Customer Reviews | 4.6 out of 5 stars 1,325 Reviews |
| Full Cure Time | 24 hours |
| Global Trade Identification Number | 00033886005272 |
| Included Components | Sealant |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Type Name | Adhesive |
| Item Weight | 10.1 ounces |
| Manufacturer | Sika USA |
| Material | 1-C polyurethane |
| Material Type | 1-C polyurethane |
| Model | 90923 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Water Resistant |
| Part Number | 017-90923 |
| Special Feature | Water Resistant |
| Specific Uses For Product | Marine |
| UPC | 033886005272 |
| Unit Count | 10.1 Fluid Ounces |
| Viscosity Level | High |
| Volume | 10.1 fluid ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** SIKA
- **Item Form:** Paste
- **Material:** 1-C polyurethane
- **Special Feature:** Water Resistant
- **Specific Uses For Product:** Marine

## Images

![SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge - Image 1](https://m.media-amazon.com/images/I/71EkVlxGSIL.jpg)
![SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge - Image 2](https://m.media-amazon.com/images/I/8119qzS3FNL.jpg)
![SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge - Image 3](https://m.media-amazon.com/images/I/81yB3UQu86L.jpg)
![SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge - Image 4](https://m.media-amazon.com/images/I/71MXUK2nQNL.jpg)
![SIKA Sikaflex-291, Black, Fast Cure Marine Adhesive and Sealant, Polyurethane for Boats, Waterproof, Paintable, 10.1 fl. oz Cartridge - Image 5](https://m.media-amazon.com/images/I/81zrwecanhL.jpg)

## Available Options

This product comes in different **Color, Size, Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy way to fix the rain sensor .
*by M***Y on May 10, 2026*

Works as advertised and is really easy to do. The hardest Part is to get the cover off from the Mirror assembly, but even that was easy. There is not much needed and with a 3 year Shelf life, you have enough left in the tubes to get it done again if needed. Great Product. I would recommend this over fixed gel pads that never will connect to the surfaces as this liquid is doing. Actually there was a gel pad installed before and it failed. That’s why I had to do this in the first place. Definitely recommend this product.

### ⭐⭐⭐⭐⭐ Softer than 5200, harder than silicone
*by M***S on June 23, 2026*

I really really like this adhesive, not as hard as 5200 harder than silicone. I potted down wires with this and the end result was exactly what I wanted.

### ⭐⭐⭐⭐⭐ Good stuff.
*by J***O on August 2, 2026*

The only thing I’ve found to stop leaks from my hot tub to pool overflow (fiberglass to marble joint).

## Frequently Bought Together

- Sikaflex-291, Black, General All-Purpose Fast Cure Marine Adhesive and sealant. Polyurethane sealant for Boats, 10.1 fl. oz Cartridge
- Sika Sikaflex-291 LOT - General All-Purpose Adhesive and sealant, Black - Marine Use - Elastic and Non-Corrosive - 10.1 fl. oz.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-08-13*