---
product_id: 47904794
title: "Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black"
brand: "sika"
price: "€ 51.54"
currency: EUR
in_stock: true
reviews_count: 13
category: "Sika"
url: https://www.desertcart.sk/products/47904794-sikaflex-291i-black-multi-functional-adhesive-sealant-for-marine-application
store_origin: SK
region: Slovakia
---

# Marine-grade waterproof sealant Sleek black finish for seamless bonding Fast curing for quick fixes Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black

**Brand:** sika
**Price:** € 51.54
**Availability:** ✅ In Stock

## Summary

> ⚓ Seal it like a pro — no leaks, no limits!

## Quick Answers

- **What is this?** Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black by sika
- **How much does it cost?** € 51.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/47904794-sikaflex-291i-black-multi-functional-adhesive-sealant-for-marine-application)

## 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

- • **Ultimate Leak Defense:** Stops water intrusion with professional-grade marine sealing.
- • **Versatile Black Finish:** Blends invisibly on dark surfaces for a clean, polished look.
- • **Rapid Application & Cure:** Bond and seal quickly to get your boat back in action faster.
- • **Trusted by Pros & DIYers:** Highly rated with 4.6 stars and top 25 rank in boat maintenance supplies.
- • **Durable Polyurethane Formula:** Engineered to withstand harsh marine environments and UV exposure.

## Overview

Sikaflex 291i Black is a 300ml professional-grade polyurethane adhesive sealant designed specifically for marine applications. It offers fast curing, waterproof sealing, and a sleek black finish that blends seamlessly on boats and outdoor surfaces. Trusted by both professionals and enthusiasts, it delivers durable, long-lasting protection against leaks and harsh environmental conditions.

## Description

Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black : desertcart.co.uk: Toys & Games

Review: A marine quality sealant - Ideal marine quality sealant that will stop those annoying leaks. Easy to apply. Reasonable price. Waterproof.
Review: Good product and fast delivery - Fast delivery and packed well.

## Features

- Contains isocyanates. May produce an allergic reaction.
- May cause an allergic skin reaction.
- Seals and bonds quickly and cleanly
- Available in black or white
- Sikaflex
- Black
- 300ml

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004ZF8L0M |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 29,996 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 21 in Boat Maintenance Supplies |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,346) |
| Date First Available | 5 May 2011 |
| Included components | 1 cartridge |
| Item Package Quantity | 1 |
| Item Weight | 402 g |
| Item model number | 291i |
| Manufacturer | Sikaflex |
| Material | Polyurethane |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part number | 291i Black |
| Pattern | Single |
| Product Dimensions | 4.8 x 4.8 x 23 cm; 402 g |
| Size | 300ml |
| Specific uses | Exterior, Inside, Professional, amateur |
| Style | Cartridge |
| Volume | 0.3 Litres |

## Product Details

- **Brand:** Sika
- **Item dimensions L x W x H:** 48 x 48 x 230 millimetres
- **Item weight:** 0.4 Kilograms
- **Material:** Polyurethane
- **Style:** Cartridge

## Images

![Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black - Image 1](https://m.media-amazon.com/images/I/41X0c-HR-SL.jpg)
![Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black - Image 2](https://m.media-amazon.com/images/I/41lqPoMM4UL.jpg)
![Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black - Image 3](https://m.media-amazon.com/images/I/51+ea4waW6L.jpg)
![Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black - Image 4](https://m.media-amazon.com/images/I/51OR9i05QWL.jpg)
![Sikaflex 291i Black Multi-Functional Adhesive Sealant for Marine Application - Black - Image 5](https://m.media-amazon.com/images/I/51WfI349TeL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Will this dry solid or is it flexible once dry?**
A: its fairly solid - if you press on it it has the flex of the rubber tread on a car tyre

**Q: Would it be good for rubber seal on car  doors**
A: It is a permanent waterproof sealant, seems to be for total immersion, not sure it would be the right thing, Sika-Sikaflex do other automotive sealants/adhesives that might also work.

**Q: Would this seal a car windscreen and sunroof? Water leaking into car.**
A: Yes it will do the job but is an adhesive as well as a sealant, there are other sealants for that purpose, Sikaflex goes off quickly so more difficult to work with and once you use some the remainder goes off, unless you seal it off well, I would look for a windscreen sealant, this is used mostly for glueing on panels..

**Q: I have a wooden hot tub and want to seal the inside joint between the sides and base. Is this suitable.**
A: Hi Mike, If the joint will be permanently immersed then I'm sorry It's not suitable.  Very few single part products are.  If , on the other hand it's not for underwater, it will work perfectly.
Hope that helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A marine quality sealant
*by D***D on 11 July 2025*

Ideal marine quality sealant that will stop those annoying leaks. Easy to apply. Reasonable price. Waterproof.

### ⭐⭐⭐⭐⭐ Good product and fast delivery
*by P***N on 16 September 2025*

Fast delivery and packed well.

### ⭐⭐⭐⭐ Ok
*by A***R on 3 August 2025*

This stuff is great for so many boat related jobs! but the biggest issue is it sets solid in the tube!!!! and if you don't use it all at once, it very quickly becomes useless and it's too expensive for that!!!! Perhaps a something to stop this would really help 🤷

## Frequently Bought Together

- Sikaflex Black 291i Multifunctional Adhesive sealant for Marine Applications, 300ml
- 10 Gauge Marine Wire 10 AWG Marine Grade Wire,10/3 Triplex Tinned Copper Boat Cable,10 Gauge Oxygen-Free Copper Cable for Automotive RV Boat Speakers Solar Outdoors - 30ft
- Sika Sikaflex-221 - Black - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl oz

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**Shop now:** [https://www.desertcart.sk/products/47904794-sikaflex-291i-black-multi-functional-adhesive-sealant-for-marine-application](https://www.desertcart.sk/products/47904794-sikaflex-291i-black-multi-functional-adhesive-sealant-for-marine-application)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-08*