---
product_id: 4737087
title: "3M Marine Adhesive Sealant 4200FC, Fast Cure, White, 3 oz Tube, 1 Each, Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications"
brand: "3m"
price: "KSh7344"
currency: KES
in_stock: true
reviews_count: 13
category: "3 M"
url: https://www.desertcart.co.ke/products/4737087-3m-marine-adhesive-sealant-4200fc-fast-cure-white-3-oz
store_origin: KE
region: Kenya
---

# Waterproof & marine-grade Tack-free in 1 hour 300 PSI tensile strength 3M Marine Adhesive Sealant 4200FC, Fast Cure, White, 3 oz Tube, 1 Each, Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications

**Brand:** 3m
**Price:** KSh7344
**Availability:** ✅ In Stock

## Summary

> ⚓ Seal the deal with speed and strength—your boat’s best kept secret!

## Quick Answers

- **What is this?** 3M Marine Adhesive Sealant 4200FC, Fast Cure, White, 3 oz Tube, 1 Each, Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications by 3m
- **How much does it cost?** KSh7344 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/4737087-3m-marine-adhesive-sealant-4200fc-fast-cure-white-3-oz)

## Best For

- 3m enthusiasts

## Why This Product

- Trusted 3m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Application:** 3 oz tube with controlled flow nozzle designed to minimize mess and maximize efficiency.
- • **Fast-Track Your Repairs:** Cures to a tack-free skin in just 1 hour, so you’re back on the water faster.
- • **Versatile Bonding Power:** Adheres seamlessly to wood, fiberglass, metal, and plastics—perfect for all your boat fittings.
- • **Semi-Permanent Yet Serviceable:** Medium-strength sealant that holds firm but allows disassembly when needed—no permanent commitment.
- • **Built for the Brutal Marine Life:** Weatherproof, flexible bonds that withstand shock, vibration, swelling, and shrinking.

## Overview

3M Marine Adhesive Sealant 4200FC is a fast-curing, polyurethane-based sealant designed for marine environments. It forms durable, flexible, and waterproof bonds on diverse materials like wood, fiberglass, and metal. Tack-free in 1 hour and fully cured in 24, it withstands harsh weather, shock, and vibration while allowing disassembly. Ideal for sealing portholes, deck fittings, and rub rails, this 3 oz tube delivers professional-grade performance for boat maintenance and repair.

## Description

3M Marine Adhesive Sealant Fast Cure 4200FC is a multi-purpose adhesive sealant made specifically for the marine market. This medium-strength adhesive forms a weather-resistant seal that still allows for disassembly. It's unique formula reacts with moisture to cure fast, forming a tack-free skin in 1 hour and fully curing in 24. Ideal for use above and below the waterline, it reliably bonds dissimilar materials including wood, fiberglass, gelcoat, plastics, and metals. Polyurethane sealants such as this form permanently flexible, elastomeric bonds that seal against the elements, maintain joint movement, and absorb stress caused by shock, vibration, swelling or shrinking. Such durability, versatility, and flexibility prepare 3M™ Marine Adhesive Sealant Fast Cure 4200FC for tough applications like sealing portholes, deck/hull fittings, rub rail attachment, screw holes, and stanchion supports. Excellent for Applications Above and Below the Water Line 3M™ Marine Adhesive Sealant Fast Cure 4200FC chemically reacts with moisture, delivering flexible bonds with good adhesion to wood, fiberglass, gelcoat, plastics and metals. This multi-purpose adhesive bonds dissimilar materials, forming a watertight, weather-resistant seal on joints and boat hardware above and below the waterline. The flexibility of 3M™ Marine Adhesive Sealant Fast Cure 4200FC allows for joint movement and stress caused by shock, vibration, swelling or shrinking. Permanently elastic, this medium strength sealant adheres to a wide variety of substrates and allows for disassembly of parts after prolonged use. Available in cartridge and sausage packs to meet your application needs. Recommended Applications Fiberglass deck to hull Wood to fiberglass Portholes Deck fittings Rubrail attachment Sealing screwholes Stanchion supports Designed to Endure Marine Environments 3M Marine Adhesive Sealant Fast Cure 4200FC is a part of our broad range of adhesive sealants uniquely formulated for the marine market. Designed for reliable performance, 3M Marine Adhesive Sealant Fast Cure 4200FC provides the strength and flexibility that can meet the demands of many tough applications. Understanding Polyurethane Sealants Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges and 400ml/600ml sausage packs. Bringing Better Ideas to the Surface through Science and Innovation In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Review: Worked Great! - I read most of the reviews on the 3M Fast Cure 4200 Sealant and was a little warry but after using the product, I am very pleased. Yes, it is not an easy flow product out of the included nozzle but it has to be designed that way or you would have material all over the place. I suggest as others have, do not try to have to small of a hole in the nozzle because it is difficult when using a smaller hole. I kept tightening the nozzle after each hole I filled on my boat and had no problems with it. The product skinned over quickly and cured totally within 24 hours. I suggest everyone, read the directions so they are not trying to use the product for an application it was not designed for. Great product and will use again if the need arises. Wish there was one size smaller because once it is opened, in 24 hours, it can no longer be used. I was filling small screw holes where I removed snap grommets in the floor of my boat and wanted to protect the area the screws had created. Sealed great and permanent till I want to pull it out or put screws back in.
Review: Quality product - This sealant is excellent. Cure time gives plenty of work time while fast enough to get back on the water quickly. Being in a tube makes easy to dispense and spread. It stands up to weather and vibration great. The adhesion is great and has held strong not had a single drop of water get by. Cleanup is easy if you do it right away. Great value in sealants.

## Features

- HIGH-PERFORMANCE SEALING: Form weather-resistant, malleable bonds between dissimilar surfaces and a wide range of marine substrates like wood, fiberglass, and metal
- MULTI-PURPOSE MARINE SEALANT: This medium-strength marine sealant bonds portholes, deck fittings, rub rails, screw holes, and stanchion supports while still allowing disassembly
- FAST CURING: Formulated for fast cure and rapid results, its tack-free in 1 hour and typically cures in 24 hours
- READY FOR WET CONDITIONS: Excels in applications both above and below the water line
- FLEXIBLE BONDS: Durable elastomeric adhesion maintains joint movement and withstands stress caused by shock, vibration, swelling and shrinking
- For industrial/occupational use only. Not for consumer sale or use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0000AY6B0 |
| Best Sellers Rank | #2,789 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Industrial Joint Sealants #19 in Boat Maintenance Supplies |
| Brand | 3M |
| Color | White |
| Date First Available | July 1, 2003 |
| Department | unisex-adult |
| Full Cure Time | 24 Hours |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 3 Fluid Ounces |
| Item Weight | 4.8 ounces |
| Item model number | 4200FC |
| Manufacturer | 3M |
| Material | Polyurethane |
| Number of Pieces | 1 |
| Package Information | Tube |
| Product Dimensions | 1.4 x 8.8 x 4.9 inches |
| Special Feature | Not_Performance_Used |
| Specific Uses For Product | boating |
| Tensile Strength | 300 Pounds Per Square Inch |
| UPC | 051135052600 |
| Unit Count | 3.0 Fluid Ounces |
| Viscosity | Medium |
| Viscosity Level | Medium |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** 3M
- **Item Form:** Liquid
- **Material:** Polyurethane
- **Special Feature:** Not_Performance_Used
- **Specific Uses For Product:** boating

## Images

![3M Marine Adhesive Sealant 4200FC, Fast Cure, White, 3 oz Tube, 1 Each, Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications - Image 1](https://m.media-amazon.com/images/I/81CPKH-JmOL.jpg)

## Available Options

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

## Questions & Answers

**Q: I'm looking for something to help wtih my boat.  The fitting attaching my bimi top is loose from the vibration.  Hoping this can help me seal it tight**
A: This is a great product, I used it to seal my fitting s on my sailboat. Not too sure it will act as a pure adhesive. If you have fasteners and this product together, this would be a good plan.

**Q: Is this available in black?**
A: Yes from 3m

**Q: Will 4200 stick to pvc, vinyl and abs plastics?**
A: as far as i know it will.  i have used it to patch holes underwater on marine vessels.

**Q: Will this adhere heat cable (snow melting) to a metal roof?**
A: Yes but not advisable to use on asphalt shingles in my opinion .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked Great!
*by S***E on January 18, 2020*

I read most of the reviews on the 3M Fast Cure 4200 Sealant and was a little warry but after using the product, I am very pleased. Yes, it is not an easy flow product out of the included nozzle but it has to be designed that way or you would have material all over the place. I suggest as others have, do not try to have to small of a hole in the nozzle because it is difficult when using a smaller hole. I kept tightening the nozzle after each hole I filled on my boat and had no problems with it. The product skinned over quickly and cured totally within 24 hours. I suggest everyone, read the directions so they are not trying to use the product for an application it was not designed for. Great product and will use again if the need arises. Wish there was one size smaller because once it is opened, in 24 hours, it can no longer be used. I was filling small screw holes where I removed snap grommets in the floor of my boat and wanted to protect the area the screws had created. Sealed great and permanent till I want to pull it out or put screws back in.

### ⭐⭐⭐⭐⭐ Quality product
*by A***H on February 19, 2025*

This sealant is excellent. Cure time gives plenty of work time while fast enough to get back on the water quickly. Being in a tube makes easy to dispense and spread. It stands up to weather and vibration great. The adhesion is great and has held strong not had a single drop of water get by. Cleanup is easy if you do it right away. Great value in sealants.

### ⭐⭐⭐⭐⭐ Fast cure time.
*by T***R on January 2, 2026*

Works well for underwater projects fast cure time. Little messy to work with. Recommend gloves.

## Frequently Bought Together

- 3M TALC Marine Adhesive Sealant Fast Cure 4200 (05260) – Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications – White – 3 Ounces
- 3M Marine Adhesive Sealant Fast Cure 5200 (06535) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 1 fl oz Tube
- 3M Marine Adhesive Sealant 5200 - Permanent Bonding and Sealing for Boats and Marine Applications - Black - 3 Ounces

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-25*