---
product_id: 84441952
title: "Marine Sealant & Adhesive"
brand: "sika"
price: "€ 44.29"
currency: EUR
in_stock: null
reviews_count: 13
category: "Sika"
url: https://www.desertcart.fi/products/84441952-marine-sealant-and-adhesive
store_origin: FI
region: Finland
---

# Resistant to fresh & sea water Fast cure time Multi-surface adhesion Marine Sealant & Adhesive

**Brand:** sika
**Price:** € 44.29
**Availability:** ❌ Out of Stock

## Summary

> 🛥️ Seal the deal with speed and strength—because your boat deserves the best!

## Quick Answers

- **What is this?** Marine Sealant & Adhesive by sika
- **How much does it cost?** € 44.29 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/84441952-marine-sealant-and-adhesive)

## 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

- • **Rapid Cure, Ready to Seal:** Get your marine projects moving fast with a sealant that sets quickly, minimizing downtime and maximizing efficiency.
- • **Versatile Surface Bonding:** Bonds flawlessly to gelcoat, fiberglass, metal, and wood—perfect for every critical joint on your vessel.
- • **Certified Safe & Paintable:** NSF and USDA approved for incidental food contact and drinkable water, plus it accepts paint for a seamless finish.
- • **Unmatched Water Resistance:** Engineered to withstand fresh water, sea water, and even sewage effluent, ensuring long-lasting durability in harsh marine environments.
- • **Flexible & Vibration-Resistant:** Maintains elasticity under stress and vibration, protecting your boat’s seams from cracking or failure over time.

## Overview

Sikaflex®-291 is a professional-grade marine sealant and adhesive designed for rapid curing and exceptional durability. It bonds securely to multiple surfaces including gelcoat, fiberglass, metal, and wood, while resisting fresh and saltwater, chemicals, and oils. Ideal for above and below waterline applications, it offers vibration resistance and elasticity, making it a trusted choice for boat builders and marine repairs. NSF and USDA approvals ensure safety for incidental food contact and potable water use.

## Description

Sikaflex®-291 is a high-quality, multipurpose sealant designed specifically for marine applications, making it ideal for use in boats and marine construction. This versatile product provides exceptional elasticity and vibration resistance, ensuring durable, long-lasting seals for joints and seams. Applications: Sikaflex®-291 is perfect for creating vibration-resistant, elastic seals in boats, yachts, and other marine vessels. It is also suitable for a variety of interior sealing applications, making it an essential product for boat maintenance and repair.

Review: Holds well, good gap filler. - Used this to fill the seam between the hull and deck. Used an electric calking gun allowing for controlled flow into the seams which were 22ft runs from stern to bow. took two tubes of Silkaflex. While fresh it was easy to use a scraper to push this material deeper into the seam and simple to remove excess leaving a smooth seam level with the deck. It took several days to harden to my satisfaction and in the meantime collected a layer of dust onto its surface. Once painted there is a subtle but clear discoloration showing through the paint. It's a good product but as this was a restoration job on a classic wooden boat I think epoxy would have been a better choice. But, no complaints with how this material works and I'm sure it will hold up for some time as the hull and deck flex a bit with movement and with the natural swelling and shrinking inherent in wood.
Review: Silkaflex Boat, RV, General use. - This is really good RTV! I didn't know Silksflex existed until I had to change out a pair of jet drives on a Zodiac Hurricane. Silksflex RTV was the recommended by the OEM manufacturer. I use Silkaflex on Motorhomes, trucks and around my house. Very strong and flexible and seawater resistant.

## Features

- Adhesive and sealant used by many boat builders, its fast cure time makes it ideal for applications where speed is important.
- SUPPORTS: Excellent adhesion to gelcoat, fiberglass, metal and wood.
- DURABILITY: Resistant to fresh water, sea water, limewater, sewage effluent, diluted acids and caustic solutions, temporarily resistant to fuels, mineral oils, vegetable and animal fats and oils.
- PERFORMANCE: Used above and below water line. It may be squeezed or brushed into place. Excellent bond, fast tack-free time and can be painted.
- NSF approved for drinkable water and USDA approved for incidental food contact. This product is suitable for experienced professional users only.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01GPIXX5Y |
| Best Sellers Rank | #5,958 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #46 in Silicone Adhesives #59 in Adhesive Caulk #117 in Industrial Sealants |
| Brand | SIKA |
| Color | White |
| Date First Available | June 8, 2005 |
| Is Discontinued By Manufacturer | No |
| Item Form | Gel |
| Item Package Quantity | 1 |
| Item Volume | 10.1 Fluid Ounces |
| Item Weight | 10.6 ounces |
| Item model number | 90919 |
| Manufacturer | Sika USA |
| Material | 1-C polyurethane |
| Package Information | Cartridge |
| Product Dimensions | 11.5 x 2 x 11.5 inches |
| UPC | 033886005258 |
| Unit Count | 10.1 Fluid Ounces |
| Viscosity | Moderate |
| Viscosity Level | Medium |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** SIKA
- **Color:** White
- **Item Form:** Gel
- **Item Package Quantity:** 1
- **Material:** 1-C polyurethane

## Images

![Marine Sealant & Adhesive - Image 1](https://m.media-amazon.com/images/I/71EkVlxGSIL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does the black caulk dry to a gloss, or is it more matte finish, like a dull rubber?**
A: it still retains a dark matte color I would not say dull, but not a gloss finish

**Q: Will it bond to bare aluminum to seal around the rivets?**
A: Yes, I used it to seal my roof fans on my Sprinter.  It adhered to painted metal (scored the paint), wood framing of the opening, plastic shroud and aluminum pressure plates.  I am extremely satisfied with this product and from the day installed, it shows no wear even after a year.  Excellent product...  Another really good product is 3m 4200 Marine Adhesive...

**Q: Will this bond to rubber?**
A: Not sure about rubber, but everything else I happened to get it on and let dry it stuck like paint.  My clothes, stainless railings, fiberglass cabin, teak of course, cork fishing rod handle, my leather wallet. . .

**Q: can you use to adhere spoiler**
A: probably work great

## Customer Reviews

### ⭐⭐⭐⭐⭐ Holds well, good gap filler.
*by J***F on July 21, 2024*

Used this to fill the seam between the hull and deck. Used an electric calking gun allowing for controlled flow into the seams which were 22ft runs from stern to bow. took two tubes of Silkaflex. While fresh it was easy to use a scraper to push this material deeper into the seam and simple to remove excess leaving a smooth seam level with the deck. It took several days to harden to my satisfaction and in the meantime collected a layer of dust onto its surface. Once painted there is a subtle but clear discoloration showing through the paint. It's a good product but as this was a restoration job on a classic wooden boat I think epoxy would have been a better choice. But, no complaints with how this material works and I'm sure it will hold up for some time as the hull and deck flex a bit with movement and with the natural swelling and shrinking inherent in wood.

### ⭐⭐⭐⭐⭐ Silkaflex Boat, RV, General use.
*by D***T on October 28, 2025*

This is really good RTV! I didn't know Silksflex existed until I had to change out a pair of jet drives on a Zodiac Hurricane. Silksflex RTV was the recommended by the OEM manufacturer. I use Silkaflex on Motorhomes, trucks and around my house. Very strong and flexible and seawater resistant.

### ⭐⭐⭐⭐⭐ Works great!
*by A***H on January 13, 2026*

I forget why I bought this - car repair? - but it worked great!

## Frequently Bought Together

- Sikaflex-291, White, General All-Purpose Fast Cure Marine Adhesive and sealant. Polyurethane sealant for Boats, 10.1 fl. oz Cartridge
- Sikaflex-291 LOT, White, Marine Adhesive and sealant, General All-Purpose PU Adhesive with Long Open time, 10.1 fl. oz
- Sikaflex-295 UV Resistant Marine Adhesive Sealant, 10.1 fl. oz Cartridge, White

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**Shop now:** [https://www.desertcart.fi/products/84441952-marine-sealant-and-adhesive](https://www.desertcart.fi/products/84441952-marine-sealant-and-adhesive)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-07*