---
product_id: 26693033
title: "Marine Sealant & Adhesive"
brand: "sika"
price: "€ 31.34"
currency: EUR
in_stock: null
reviews_count: 13
category: "Sika"
url: https://www.desertcart.it/products/26693033-marine-sealant-and-adhesive
store_origin: IT
region: Italy
---

# Marine-grade water resistance Paintable & sandable finish Elastic & vibration-resistant seal Marine Sealant & Adhesive

**Brand:** sika
**Price:** € 31.34
**Availability:** ❌ Out of Stock

## Summary

> 🛥️ Seal your marine projects with confidence—because your boat deserves the best!

## Quick Answers

- **What is this?** Marine Sealant & Adhesive by sika
- **How much does it cost?** € 31.34 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/26693033-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

- • **Built to Last in Any Waters:** Resists fresh & saltwater, diluted acids, fuels, and oils for unmatched durability.
- • **Easy Application, Zero Hassle:** Compatible with manual, pneumatic, or electric piston guns for precise control.
- • **Ultimate Marine Bonding Power:** Adheres flawlessly to wood, fiberglass, metal & more—above or below waterline.
- • **Effortless Professional Finish:** Self-leveling formula that sands and paints easily for a sleek, seamless look.
- • **Flexible & Vibration-Resistant:** Elastic polyurethane ensures joints stay secure even under constant movement.

## Overview

SIKA Sikaflex-291 LOT is a premium black, one-component polyurethane marine adhesive and sealant designed for superior bonding and sealing on wood, fiberglass, and metal surfaces. It offers exceptional elasticity, water resistance (fresh and salt), and chemical resistance, curing via atmospheric moisture to a durable, paintable finish. Ideal for both above and below waterline applications, it delivers professional-grade results with easy application and long-lasting performance.

## Description

If you need a marine-grade sealant that creates a strong, secure bond with a wide array of surfaces commonly found in marine applications, Sikaflex-291 LOT's black sealant is the ideal choice. It's specially designed for use where a long working time is needed, and cooler temperatures can extend the curing period. The typical skinning period is four hours, after which it can be painted for a more professional finish. Sikaflex-291 LOT is a self-leveling marine grade sealant, so you won't need to tool it down for an even surface. 10.1 fl. oz. cartridges fit conveniently on a variety of piston guns.

Review: Good adhesive for a boating project - I used this to attach a heavy duty rub rail on my old BW Outrage (belt and suspenders approach, I didn't trust that the screws that came with the rub rail would work). It's been six months since I did the work and it seems to be holding well. Cures somewhat quickly which makes it tricky to use on a large area in summer heat. I'd use it again before the #M product.
Review: As expected - Works good.

## Features

- IDEAL FOR MARINE APPLICATIONS — Sika 291 adheres to material commonly used in marine construction, such as wood, fiberglass, metal, and metal primers and paint coatings. Use above or below water line
- VERSATILE AND DURABLE — It is non-corrosive and highly elastic making vibration-resistant joint seals on decking and can be used in an array of interior contexts
- FORMULATED FOR PERFORMANCE — This one-component polyurethane marine-grade sealant cures upon exposure to atmospheric moisture. The black sealant can be overpainted and sanded without loss of stability
- RESISTANT TO BOTH FRESH AND SEAWATER — Will also resist diluted acids and caustic solutions. Provides temporary resistance to fuels, mineral oils, and vegetable and animal fats
- EASY APPLICATION — Use a manual, pneumatic, or electric-driven piston gun to apply this one-component polyurethane paste. Surface should be clean and dry prior to application for optimal performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C50GIQI |
| Best Sellers Rank | #24,123 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Polyurethane Adhesives #46 in Urethane Adhesives |
| Brand | SIKA |
| Color | Black |
| Date First Available | August 26, 2009 |
| Full Cure Time | 24 Hours |
| Is Discontinued By Manufacturer | No |
| Item Form | Oz |
| Item Package Quantity | 1 |
| Item Volume | 10.1 Fluid Ounces |
| Item Weight | 10.1 ounces |
| Item model number | 90927 |
| Manufacturer | Sika USA |
| Material | 1-C polyurethane |
| Number of Pieces | 1 |
| Package Information | Cartridge |
| Product Dimensions | 14 x 2 x 2 inches |
| Special Feature | Water Resistant |
| Specific Uses For Product | Marine, Underwater |
| UPC | 033886005289 |
| Unit Count | 10.1 Fluid Ounces |
| Viscosity Level | Medium to High |
| Water Resistance Level | Water Resistant |

## Product Details

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

## Images

![Marine Sealant & Adhesive - Image 1](https://m.media-amazon.com/images/I/51GrKuGzegL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this work to repair cracks in my pool skimmer? Is it elastic or hard like epoxy when cured?**
A: It is elastomeric and should work well for that I would think.  I used it to seal the roof seams on a 2015 GMC pickup and it worked great.  Keep in mind it is self leveling so it spreads out a bit on its own.

**Q: Would this work for adhering rubber matting to a wooden and aluminum boat deck?**
A: yes, it would work. A permanent solution would be 3M 5200 sealant. Try a small piece first!

**Q: can i use this to attach solar panels to camper roof? pnls weigh 24pnds.**
A: I used mine for water proofing sealant while glueing down a metal flang which weighed very little. Not sure about the solar panels

**Q: Would this work in a swimming pool.  I have a concrete pool that has plexiglass windows in the sides below the water level.**
A: I believe so, we use it on the seams of our water slide that's underwater at all times.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good adhesive for a boating project
*by A***R on January 30, 2026*

I used this to attach a heavy duty rub rail on my old BW Outrage (belt and suspenders approach, I didn't trust that the screws that came with the rub rail would work). It's been six months since I did the work and it seems to be holding well. Cures somewhat quickly which makes it tricky to use on a large area in summer heat. I'd use it again before the #M product.

### ⭐⭐⭐⭐⭐ As expected
*by R***Y on December 18, 2025*

Works good.

### ⭐⭐⭐⭐⭐ Easy to apply, looks like a good seal
*by E***. on March 2, 2024*

I used it to seal between the body and the bottom pan of a 1970s VW Beetle I'm rebuilding. It'll take me months to find if the seal provided by this product is durable. But for now, it looks encouraging. Also, it is rated for "below the waterline", and that should be more than sufficient overkill for a Volkswagen. As I had to apply the sealant from below the car, it dripped a little bit but not badly. The product flows into place readily and can be smoothed, like caulk, with a gloved (!!!) finger. Go without gloves and have a very messy clean-up coming. The product dries to a deep glossy black. As it is paintable, I plan to spray the bottom of the car with undercoating for protection. The seals cured overnight and look confidence-inspiring.

## Frequently Bought Together

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

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-05*