---
product_id: 383547569
title: "Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas"
brand: "seal-once"
price: "$434.93"
currency: USD
in_stock: true
reviews_count: 5
category: "Seal Once"
url: https://www.desertcart.us/products/383547569-marine-penetrating-wood-sealer-and-waterproofer-clear-1-gallon-waterproofer
store_origin: US
region: United States of America
---

# Eco-friendly low VOC Waterproof barrier Nanotech deep penetration Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas

**Brand:** seal-once
**Price:** $434.93
**Availability:** ✅ In Stock

## Summary

> 🌊 Seal the deal with marine-grade protection that’s as smart as it is sustainable!

## Quick Answers

- **What is this?** Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas by seal-once
- **How much does it cost?** $434.93 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/383547569-marine-penetrating-wood-sealer-and-waterproofer-clear-1-gallon-waterproofer)

## Best For

- seal-once enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Safe & Low VOC:** Water-based, non-toxic formula safe for people, pets, plants, and marine life.
- • **Deep Cellular Protection:** Nanotechnology bonds at the microscopic level for unmatched wood stability.
- • **Versatile Marine-Grade Use:** Perfect for docks, piers, decks, and retaining walls exposed to fresh or saltwater.
- • **Flexible Breathable Barrier:** Allows wood to expand and contract naturally while repelling moisture.
- • **Long-Lasting Natural Finish:** Non-film forming, dries clear, preserving wood’s authentic beauty without peeling.

## Overview

SEAL-ONCE MARINE is a premium, water-based wood sealer using advanced nanotechnology to penetrate wood fibers deeply, creating a flexible, breathable, and waterproof barrier. Its ultra-low VOC, non-toxic formula is safe for marine environments and protects wood from warping, rot, mold, and algae while preserving natural aesthetics. Ideal for high-moisture outdoor wood surfaces like docks, decks, and piers, it ensures long-lasting durability and easy maintenance.

## Description

SEAL-ONCE MARINE Premium Wood Sealer protects and stabilizes wood against water damage and decay. It uses proprietary nanotechnology to penetrate, coating the wood fibers at the cellular level. The advanced technology of MARINE allows it to form a superior barrier below the surface, protecting from the inside out.MARINE allows wood to age naturally without decay, and can be used to preserve old or new wood, extending its natural life. It is non-film forming and will not alter the natural beauty of the wood. It can be applied around or over open water, without harming marine life. MARINE preserves the integrity of the wood by inhibiting warping, cupping, rot, mold, mildew and algae growth. MARINE forms a flexible breathable barrier that allows the wood to expand and contract, and for water vapor to escape. MARINE goes on milky white and dries clear. It is also available in semi-transparent tints. Recommended Applications• Decks • Docks • Railings • Piers • Retaining walls • Outdoor furniture. Available in 11 semi-transparent color tints. Choose from Battleship Gray, Black, Bronze Cedar, Brown, Cape Cod Gray, Cedar, Light Brown, Mahogany, Natural, Redwood & Shale Gray. Typical sealers form a barrier on the surface, trapping moisture below the surface. As water evaporates, it causes the surface coating to crack & peel, leaving a surface that requires continued maintenance. SEAL-ONCE protects against water damage, using proprietary nanotechnology that penetrates deep into the wood and bonds to the wood fibers and cells at a microscopic level. SEAL-ONCE protects from the inside out to provide unparalleled protection & stability for wood. The flexible, breathable barrier created by SEAL-ONCE, allows water vapor to escape while preventing damage caused by water intrusion.

Review: Great Stuff - Put one coat on some cedar fence last year. Noticed the other day how good it still looks. Went and coated it again and the product beaded up just like it was applied yesterday. Excellent outdoor sealer. This penetrates and makes water bead up but does not leave much of a surface film. Its super easy to apply and totally forgiving.
Review: This is what you need! - Wow! I couldn’t be more impressed! I searched for the perfect sealer for a live edge outdoor art piece and this one ticked all the boxes: Goes on quick and easy, low/no odor, soap & water clean up, fast drying, non-yellowing and excellent waterproofing. The best part!? It lived up to all of my expectations! The only “negative” about this product (which was actually an amazing bonus) was the clip added to the top of the gallon to prevent leaking during shipping was on tight and took some muscle to remove!! Shipping was lightening fast too!! It did an excellent job in sealing the live edge of the wood and I anticipate it will preserve it for years!

## Features

- Specially Formulated to be Applied Around & Over Fresh or Salt Water
- Water-based, Low VOC, Non-toxic; Safe for People, Pets, Plants & Marine Life
- Superior Nanotechnology Penetrates Deep, Coating Wood Fibers at the Cellular Level
- Performs like an Oil-Based Sealer Without any Harmful Chemicals or Side Effects
- Creates a Flexible, Breathable Barrier that Enhances, Stabilizes & Protects Wood

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00EQ89RYW |
| Brand | Seal-Once |
| Brand Name | Seal-Once |
| Colour | Wood |
| Compatible Material | Wood |
| Country of Publication | USA |
| Customer Reviews | 4.3 out of 5 stars 1,698 Reviews |
| Included Components | SEAL-ONCE MARINE - 1 Gallon Penetrating Wood Sealer, Waterproofer & Stain. Water |
| Item Dimensions | 30.5 x 30.5 x 30.5 Centimeters |
| Item Form | Liquid |
| Item Weight | 3.99 kg |
| Item dimensions L x W x H | 30.5 x 30.5 x 30.5 Centimeters |
| Manufacturer | New Image Coatings, LLC |
| Manufacturer Part Number | 7614 |
| Material | oil based , water based |
| Material Type | oil based, water based |
| Model | 7614 |
| Number of Items | 1 |
| Style | Outdoor |
| Style Name | Outdoor |
| Surface Recommendation | Wood |
| UPC | 850336001024 |
| Unit Count | 3785.41 Milliliters |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Seal-Once
- **Item Weight:** 3.99 kg
- **Item dimensions L x W x H:** 30.5 x 30.5 x 30.5 Centimeters
- **Material:** oil based, water based
- **Style:** Outdoor

## Images

![Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas - Image 1](https://m.media-amazon.com/images/I/71meKazl2vL.jpg)
![Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas - Image 2](https://m.media-amazon.com/images/I/81pymE-9HtL.jpg)
![Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas - Image 3](https://m.media-amazon.com/images/I/71-kHKQX+IL.jpg)
![Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas - Image 4](https://m.media-amazon.com/images/I/81JAh4NPp2L.jpg)
![Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas - Image 5](https://m.media-amazon.com/images/I/91jIbWCF5cL.jpg)

## Questions & Answers

**Q: Can it be used on green treated lumber**
A: Pressure treated lumber has to be dry.

**Q: Can you use a regular wood stain after applying?**
A: Yes the clear MARINE can be painted or stained.  Or you can purchase a tint for SEAL-ONCE and use the MARINE as a sealer and stain.

MARINE Features:
• Clear formula can be painted or stained after treatment
• Tinted formula provides additional UV protection
•  Available in 11 semi-transparent tint colors
• Eco-friendly, Non-toxic; will not harm pets, plants, people or marine life
• Ultra-low VOC, Water based
• Can be applied around or over fresh or salt water
• Flexible, breathable barrier, Stabilizes & protects wood
• Prevents warping, cupping, wood rot & decay
• Resistant to salt water spray
• Prevents mold, mildew & algae growth
• Soap and water cleanup

**Q: I want to use this on a 6x6 wood beam at the opening to my walk-in shower (floor to ceiling). No direct shower spray. Will this seal it?**
A: Yes you may use it for this specific application. As suggested in a comment down bellow, you would want to make sure that it is fully cured before using the shower. Typically it would take 48 hours to cure but it may take longer depending on the environment.

**Q: does this work for the interior of a sauna , safe to sit on?**
A: It dries to a hard, smooth finish, is non toxic and nice to look at.  Would be safe to sit on...other types of recreation may require caution.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Stuff
*by W***I on 12 May 2026*

Put one coat on some cedar fence last year. Noticed the other day how good it still looks. Went and coated it again and the product beaded up just like it was applied yesterday. Excellent outdoor sealer. This penetrates and makes water bead up but does not leave much of a surface film. Its super easy to apply and totally forgiving.

### ⭐⭐⭐⭐⭐ This is what you need!
*by B***A on 30 April 2025*

Wow! I couldn’t be more impressed! I searched for the perfect sealer for a live edge outdoor art piece and this one ticked all the boxes: Goes on quick and easy, low/no odor, soap & water clean up, fast drying, non-yellowing and excellent waterproofing. The best part!? It lived up to all of my expectations! The only “negative” about this product (which was actually an amazing bonus) was the clip added to the top of the gallon to prevent leaking during shipping was on tight and took some muscle to remove!! Shipping was lightening fast too!! It did an excellent job in sealing the live edge of the wood and I anticipate it will preserve it for years!

### ⭐⭐⭐⭐⭐ Bonne qualité
*by A***R on 12 May 2026*

Bonne qualité de produits

## Frequently Bought Together

- Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon & Clear
- Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement
- Magimate Deck Brush for Applying Stain, 5-inch Paint Brush, Medium Size for Quick Decking, Fence, Walls and Furniture Paint Application, Handle Threaded for Extension Use, Multicolor

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-23*