---
product_id: 3611049
title: "3M Marine Adhesive Sealant 5200"
brand: "3m"
price: "€ 37.13"
currency: EUR
in_stock: null
reviews_count: 13
category: "3 M"
url: https://www.desertcart.pt/products/3611049-3m-marine-adhesive-sealant-5200
store_origin: PT
region: Portugal
---

# Cures fully in 5-7 days Waterproof above & below waterline 5200 PSI ultimate bond strength 3M Marine Adhesive Sealant 5200

**Brand:** 3m
**Price:** € 37.13
**Availability:** ❌ Out of Stock

## Summary

> ⚓ Seal it like a pro — permanent, flexible, and waterproof for every adventure!

## Quick Answers

- **What is this?** 3M Marine Adhesive Sealant 5200 by 3m
- **How much does it cost?** € 37.13 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/3611049-3m-marine-adhesive-sealant-5200)

## 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

- • **No-Mix, Easy Application:** Ready to use straight from the tube—save time and avoid mess on your next project.
- • **Flexible & Shock-Resistant:** Stays crack-free under vibration and structural movement—no peeling, no fail.
- • **All-Weather Waterproof Seal:** Resists saltwater, wind, and extreme temps for worry-free outdoor durability.
- • **Multi-Surface Compatibility:** Bonds wood, fiberglass, metal, and gelcoat for versatile marine and RV repairs.
- • **Pro-Grade Permanent Bonding:** Trusted by marine pros for 50+ years to create unbreakable, lasting seals.

## Overview

3M Marine Adhesive Sealant 5200 is a professional-grade, polyurethane-based sealant designed for permanent bonding and sealing on boats, RVs, and watercraft. It offers superior waterproof performance above and below the waterline, cures fully in 5-7 days, and remains flexible to resist cracking under vibration and shock. Compatible with multiple materials including fiberglass and wood, it’s the go-to sealant trusted by experts for over five decades.

## Description

3M Marine Adhesive Sealant 5200 is a tough, flexible polyurethane for permanent bonding and sealing your RV, boat or other watercraft. It is ideal for use on wood, gelcoat, fiberglass, metal and more. It is recommended for interiors, below the waterline and any other places that are shielded from sunlight. It applies right from the container – no mixing is required. It becomes tack-free in 48 hours, and cures to form a firm, flexible, waterproof seal on joints and boat hardware. Far more than a marine caulk, tough, flexible Marine Adhesive 5200 dissipates stress caused by vibration and shock, and won’t crack under dynamic force. It resists saltwater, wind, weather and temperature extremes for long periods of worry-free enjoyment on the water. In fact, for more than 50 years, 3M Marine Adhesive Sealant 5200 has been used and trusted as a marine sealant by professionals in some of the most demanding conditions on earth. 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.

Review: 5200 Sealant Really Works!! - This 5200 is the best. I had issues with my 3 seasons room leaking at the outside sill areas. I tried many other silicone sealants. This 5200 did the job. Excellent product. Will buy again. Messy but worth every penny!!!
Review: For the best protection - Best product has a sealant on the market. Highly recommend will hold anything tight and waterproof.

## Features

- USE WHAT THE PROS USE – Extremely strong adhesive sealant retains strength above or below waterline
- BONDS PERMANENTLY – Ideal for sealing, bonding and attaching on the interiors of boats and RVs, or on exteriors below the waterline and where shielded from the sun
- LONG LASTING FORMULA – Tough polyurethane polymer resists weathering and salt water
- WON’T CRACK OR PEEL – Stays flexible, retaining strong bonds even during vibration, structural movement or shock
- EASY TO APPLY – Adhesive sealant requires no mixing, cures completely in 5-7 days
- For industrial/occupational use only. Not for consumer sale or use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0000AY6AO |
| Best Sellers Rank | #1,035 in Automotive ( See Top 100 in Automotive ) #88 in Body Repair & Restoration Adhesives |
| Brand Name | 3M |
| Color | White |
| Compatible Material | Fiberglass, Wood |
| Customer Reviews | 4.6 4.6 out of 5 stars (10,381) |
| Included Components | ADHESIVE SEALANT |
| Item Dimensions | 2 x 5 x 9 inches |
| Item Form | Strip |
| Item Type Name | 3M Marine Adhesive Sealant 5200 (05203) – Permanent Bonding and Sealing for Boats and RVs – White – 3 Ounces |
| Item Weight | 0.14 Kilograms |
| Manufacturer | 3M |
| Material Type | Plastic |
| Model | 5203 |
| Number of Items | 1 |
| Part Number | 051135052037 |
| Style Name | 5200 |
| Unit Count | 3.0 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** 3M
- **Item Weight:** 0.14 Kilograms
- **Item dimensions L x W x H:** 2 x 5 x 9 inches
- **Material:** Plastic
- **Style:** 5200

## Images

![3M Marine Adhesive Sealant 5200 - Image 1](https://m.media-amazon.com/images/I/81OQoNQmzuL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5200 Sealant Really Works!!
*by B***K on March 30, 2026*

This 5200 is the best. I had issues with my 3 seasons room leaking at the outside sill areas. I tried many other silicone sealants. This 5200 did the job. Excellent product. Will buy again. Messy but worth every penny!!!

### ⭐⭐⭐⭐⭐ For the best protection
*by C***N on March 19, 2026*

Best product has a sealant on the market. Highly recommend will hold anything tight and waterproof.

### ⭐⭐⭐⭐⭐ Absolutely amazing product
*by C***S on April 4, 2026*

Purchased this product to attempt to seal a challenging flashing issue which has three different material in an awkward transition. I removed all the material from the previous two attempts to waterproof the area, leaving a larger than previous opening to work this material into. After cleaning and prepping the surfaces, I began to applying this 3M product. It is thick, but not problematic to dispense - possibly other reviewers were dispensing through a smaller orifice than me - I used the full tube opening without a tip. The product is exceptionally easy to manipulate and smooth out - almost putty like. Unlike other products like silicone and polyurethane, it didn't stick much to my applicator and thus stayed were I wanted it (without sag) and also smoothed out easily. Bottom line is it adhered to all three materials, filled the voids perfectly, looks great, and the leak is no more! I highly, highly recommend this product - it's amazing!

## Frequently Bought Together

- 3M Marine Adhesive Sealant 5200 (05203) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 3 fl oz Tube
- 3M Marine Adhesive Sealant Fast Cure 5200 (05220) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 3 fl oz Tube
- 3M TALC Marine Adhesive Sealant Fast Cure 4200 (05260) – Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications – White – 3 Ounces

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**Shop now:** [https://www.desertcart.pt/products/3611049-3m-marine-adhesive-sealant-5200](https://www.desertcart.pt/products/3611049-3m-marine-adhesive-sealant-5200)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-04-24*