---
product_id: 364654375
title: "Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack)"
brand: "mitreapel"
price: "€ 16.81"
currency: EUR
in_stock: false
url: https://www.desertcart.pt/products/364654375-waterproof-polyurethane-glue-20-3-fl-oz-bottle-marine-glue
store_origin: PT
region: Portugal
---

# 100% waterproof marine-grade sealant Withstands extreme heat & cold Versatile on wood, metal, glass & more Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack)

**Brand:** mitreapel
**Price:** € 16.81
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Seal it once, trust it forever — the ultimate marine glue for pros!

## Quick Answers

- **What is this?** Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack) by mitreapel
- **How much does it cost?** € 16.81 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/364654375-waterproof-polyurethane-glue-20-3-fl-oz-bottle-marine-glue)

## Best For

- mitreapel enthusiasts

## Why This Product

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

## Key Features

- • **Gap-Filling Precision:** Expands to fill joints without drips or runs on vertical surfaces
- • **Multi-Surface Mastery:** Bonds wood, metal, ceramics, foam, glass, concrete effortlessly
- • **All-Weather Durability:** Resists heat, cold, and moisture for lasting repairs
- • **User-Friendly Application:** No mixing needed; easy spread, stainable, paintable & sandable
- • **Unmatched Waterproof Strength:** Seals above & below waterline with absolute reliability

## Overview

Mitreapel’s Waterproof Polyurethane Glue delivers a robust, 100% waterproof bond ideal for marine and outdoor repairs. Its medium viscosity formula withstands extreme temperatures and moisture, bonding diverse materials like wood, metal, glass, and concrete. Ready-to-use with no mixing, it cures fully in 24 hours, expanding to fill gaps without dripping, and dries paintable and sandable for professional finishes.

## Description

PA300 PU MARINE GLUE 16 OZ, 100 WATERPROOF WOOD GLUE FOR OUTDOOR USE AND BOATS, RVS

## Features

- Marine waterproof sealant : 100% waterproof. Extreme heat, cold, and water have no effect on glue, ideal for indoor and outdoor repairs.
- Versatile performance : Your solution for almost any project or repair a wood, picture frames, toys, crafts, brick, metal, cement, ceramics, foam, glass, concrete, etc.
- Easy to use & Apply : Roughen up the shiny surfaces, glass, some plastics and metals. Then clean the surfaces and moisturize surface spraying with water.
- Fix & Repairs : Fills small gaps on joints. No runs in vertical surfaces and construction. Dried glue is stainable, paintable and sandable boat construction sealant.
- Solvent free : Original polyurethane strong marine adhesive, requires no mixing, for better results allow cure completely in 1 day.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B097PZWHWX |
| Best Sellers Rank | #323,157 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #959 in Cyanoacrylate Adhesives |
| Brand Name | Mitreapel |
| Color | Clear |
| Compatible Material | Brick, Ceramic, Concrete, Foam, Glass, Metal, Plastic, Wood |
| Container Type | Bottle |
| Customer Reviews | 4.1 4.1 out of 5 stars (202) |
| Full Cure Time | 1 days |
| Included Components | Item |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Manufacturer | Adhesive Guru |
| Material Type | Polyurethane |
| Model | UFZ-PA300-1-FBM |
| Number of Pieces | 1 |
| Other Special Features of the Product | Strong, Strong Waterproof |
| Part Number | bta_PurMarGlue_PA300-1pk |
| UPC | 769613972943 |
| Unit Count | 20.3 Fluid Ounces |
| Viscosity Level | Medium |
| Volume | 20.3 fluid ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Mitreapel
- **Color:** Clear
- **Item Form:** Liquid
- **Material:** Polyurethane
- **Special Feature:** Strong, Strong Waterproof

## Images

![Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack) - Image 1](https://m.media-amazon.com/images/I/41jVeq9BfmL.jpg)
![Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack) - Image 2](https://m.media-amazon.com/images/I/61Y9qDQYpvL.jpg)
![Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack) - Image 3](https://m.media-amazon.com/images/I/51y7-PyutoL.jpg)
![Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack) - Image 4](https://m.media-amazon.com/images/I/51fO6Nf1IWL.jpg)
![Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below the Waterline (1 Pack) - Image 5](https://m.media-amazon.com/images/I/51ULWwngRwL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this the right product to use when adhering a keel protector to the bottom of a thermoformed plastic skin or hdpe kayak?**
A: No it is not, not much sticks to hdpe, I would look at a plastic welder

**Q: Will this work with adhering marine grade carpet on treated lumber for bunk boards on boat trailer for use in saltwater?**
A: No. This glue expands just like expandable foam filler or insulation.

**Q: will this work to glue wood strips to styrofoam in a boat seat?**
A: Depends on the foam. If the glue is compatible with your particular foam, and does not melt it, it would work. Watch the shelf life on this glue. It is only about a year.

**Q: Will this glue work with rubber?**
A: This type of glue is only suited for nonflexible joints.

## Frequently Bought Together

- Waterproof Polyurethane Glue 20.3 fl oz. Bottle Marine Glue for Boats and RVs Natural PU Adhesive for Above and Below The Waterline (1 Pack)
- Akfix PA370 Express Marine Adhesive (1x15.4 fl.oz) - Extra Strength Wood Glue for Metal & Woodworking, for Furniture Repair, Waterproof Polyurethane Glue for Outdoors & Indoors | 15.4 fl.oz. 1 Pack
- Gorilla Original Gorilla Glue, Waterproof Polyurethane Glue, 8 Ounce Bottle, Brown, (Pack of 1)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pt/products/364654375-waterproof-polyurethane-glue-20-3-fl-oz-bottle-marine-glue](https://www.desertcart.pt/products/364654375-waterproof-polyurethane-glue-20-3-fl-oz-bottle-marine-glue)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-07*