---
product_id: 84441952
title: "Marine Sealant & Adhesive"
brand: "sika"
price: "6122 kr"
currency: ISK
in_stock: null
reviews_count: 13
category: "Sika"
url: https://www.desertcart.is/products/84441952-marine-sealant-and-adhesive
store_origin: IS
region: Iceland
---

# Marine-grade adhesion & flexibility Resistant to fresh & sea water Fast cure time under 24h Marine Sealant & Adhesive

**Brand:** sika
**Price:** 6122 kr
**Availability:** ❌ Out of Stock

## Summary

> ⚓ Seal it fast, sail it strong — the marine pro’s secret weapon!

## Quick Answers

- **What is this?** Marine Sealant & Adhesive by sika
- **How much does it cost?** 6122 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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

- • **All-Weather Warrior:** Withstands fresh water, seawater, acids, and oils — built for harsh marine environments.
- • **Unmatched Marine Bond:** Superior adhesion to gelcoat, fiberglass, metal, and wood for lasting durability.
- • **Versatile Application:** Squeeze or brush on above or below waterline; paintable for seamless finishes.
- • **Certified Safe & Reliable:** NSF & USDA approved for drinkable water and incidental food contact — trusted by pros.
- • **Rapid Seal, Ready to Sail:** Fast tack-free cure accelerates your marine projects without downtime.

## Overview

Sikaflex-291 is a professional-grade, fast-curing polyurethane marine adhesive and sealant designed for boats and marine construction. It offers excellent adhesion to multiple substrates, superior water and chemical resistance, and elasticity to withstand vibration and movement. Ideal for above and below waterline use, it is NSF and USDA approved, making it a trusted choice for durable, safe, and efficient marine sealing.

## 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 | #8,128 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #55 in Silicone Adhesives #72 in Adhesive Caulk #134 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.

### ⭐⭐⭐⭐⭐ Would buy again
*by L***A on November 11, 2025*

Great product..worked well..

## 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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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-11*