---
product_id: 47904792
title: "marine sealant"
brand: "sika"
price: "177 zł"
currency: PLN
in_stock: true
category: "Sika"
url: https://www.desertcart.pl/products/47904792-marine-sealant
store_origin: PL
region: Poland
---

# Marine-grade waterproof sealant Fast curing for quick fixes Strong polyurethane bond marine sealant

**Brand:** sika
**Price:** 177 zł
**Availability:** ✅ In Stock

## Summary

> ⚓ Seal your success with marine-grade precision!

## Quick Answers

- **What is this?** marine sealant by sika
- **How much does it cost?** 177 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/47904792-marine-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

- • **Clean and easy use:** Smooth paste formula in a convenient 300ml cartridge for mess-free application
- • **Versatile application:** Perfect for fibreglass, plastic, and door surfaces—one sealant for all your needs
- • **Leak-proof marine strength:** Seals and bonds quickly to keep your vessel dry and secure
- • **Durable waterproof protection:** Engineered to withstand harsh marine environments without fail
- • **Trusted quality from Switzerland:** Backed by 4.6-star reviews and global reliability for professional results

## Overview

Sikaflex 291i White is a professional-grade polyurethane adhesive sealant designed specifically for marine applications. It offers fast curing, strong waterproof bonding on fibreglass and plastic surfaces, and comes in a convenient 300ml cartridge. Trusted worldwide and highly rated, it ensures durable, leak-proof seals that withstand tough marine conditions.

## Description

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

## Features

- Contains isocyanates. May produce an allergic reaction.
- May cause an allergic skin reaction.
- Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.
- Seals and bonds quickly and cleanly
- Available in black or white
- Sikaflex
- White
- 300ml

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004X7PEL6 |
| Best Sellers Rank | 78,218 in DIY & Tools ( See Top 100 in DIY & Tools ) 15 in Adhesive Caulk |
| Brand | Sika |
| Colour | White |
| Compatible Material | Fibreglass |
| Country Of Origin | Switzerland |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,395) |
| Global Trade Identification Number | 07612894815009 |
| Included Components | 1 cartridge |
| Item Dimensions | 48 x 48 x 230 millimetres |
| Item Form | Paste |
| Item Type Name | Sikaflex 291i Multifunctional adhesive sealant for marine applications |
| Item Weight | 0.41 Kilograms |
| Manufacturer | Sikaflex |
| Manufacturer Part Number | 291i White |
| Material | Polyurethane |
| Model Number | 291i White |
| Number of Items | 1 |
| Style Name | Cartridge |
| Surface Recommendation | Plastic, doors |
| Unit Count | 300.0 millilitre |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Sika
- **Item dimensions L x W x H:** 48 x 48 x 230 millimetres
- **Item weight:** 0.41 Kilograms
- **Material:** Polyurethane
- **Style:** Cartridge

## Images

![marine sealant - Image 1](https://m.media-amazon.com/images/I/61HEF2AEOoL.jpg)

## Available Options

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

## Questions & Answers

**Q: would this be OK to stick my satellite dish to the top of my motor-home without screws?**
A: It's a good product but I would not trust it for that, use it along with the screws, just to be on the safe side. Is there not a plate with the dish that you could fix on permanently so that you could easily remove the dish?

**Q: Dear,

May i know the best before date?**
A: Morning.  Exp Date of current stock is 09/2023.  Hope that helps.

**Q: Can I use this to seal a roof vent on my camper? I need to make sure it is completely watertight. Thank you**
A: Yes , you can , and it will seal against water ingress, It's also used for sealing deck fittings on a yacht or seagoing motor cruiser.

**Q: Would this work for waterproofing cracks in outside concrete steps**
A: Probably would, but I would try concrete first of all to fill the gaps, it would look better.

## Frequently Bought Together

- Sikaflex White 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pl/products/47904792-marine-sealant](https://www.desertcart.pl/products/47904792-marine-sealant)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-07*