---
product_id: 383547569
title: "SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon"
brand: "seal-once"
price: "$415.62"
currency: USD
in_stock: true
reviews_count: 5
category: "Seal Once"
url: https://www.desertcart.us/products/383547569-seal-once-marine-penetrating-wood-sealer-and-waterproofer-clear-1
store_origin: US
region: United States of America
---

# Waterproof barrier tech Eco-friendly & non-toxic Nanotech cellular penetration SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon

**Brand:** seal-once
**Price:** $415.62
**Availability:** ✅ In Stock

## Summary

> 🌟 Seal your wood’s future with science-driven, eco-smart protection!

## Quick Answers

- **What is this?** SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon by seal-once
- **How much does it cost?** $415.62 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-seal-once-marine-penetrating-wood-sealer-and-waterproofer-clear-1)

## 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 Formula:** Water-based, low VOC, and safe for people, pets, and marine life.
- • **All-Weather Resilience:** Protects against water, sun, mold, mildew, and algae for years.
- • **Effortless Application:** Goes on milky white, dries clear, and recoats quickly to save time.
- • **Deep Cellular Protection:** Nanotechnology penetrates wood fibers for unmatched durability.
- • **Flexible Breathable Barrier:** Allows wood to expand and contract naturally without cracking.

## Overview

SEAL-ONCE Marine Penetrating Wood Sealer uses advanced nanotechnology to deeply penetrate and protect wood at the cellular level. This water-based, low VOC formula creates a flexible, breathable barrier that prevents water damage, decay, and UV wear without harmful chemicals. Safe for use around fresh and saltwater environments, it preserves wood’s natural beauty while extending its lifespan—ideal for decks, docks, and outdoor furniture.

## 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: An excellent wood sealer and waterproofer! - I am returning to leave this review having 3 years of experience with this product. I purchased Seal-Once Marine Penetrating Wood Sealer (clear) in June 2023, 3 years ago, and applied it to a large gazebo (from Costco) on my deck. Seal-Once has done a phenomenal job of protecting the wood, and the gazebo still looks almost new. My experience with prior brands of sealer/waterproofing caused me to do a lot of research while selecting which protection to use on my new gazebo. I live in sunny California so sun damage was my primary concern, but we average 54” of rain annually so I was also looking for water protection too. I have been pleasantly surprised that this product has really surpassed my expectations. I am a very satisfied customer and will continue to use Seal-Once Marine Penetrating Wood Sealer. (The attached photo was taken right after the gazebo was first installed.)
Review: Good and simple - Good product, easy to apply and can recoat almost immediately- save lots of time

## 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 |
| Customer Reviews | 4.3 out of 5 stars 1,754 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 | 8.8 Pounds |
| 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

![SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/71meKazl2vL.jpg)
![SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon - Image 2](https://m.media-amazon.com/images/I/81pymE-9HtL.jpg)
![SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon - Image 3](https://m.media-amazon.com/images/I/71-kHKQX+IL.jpg)
![SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon - Image 4](https://m.media-amazon.com/images/I/81JAh4NPp2L.jpg)
![SEAL-ONCE Marine Penetrating Wood Sealer and Waterproofer, Clear, 1 Gallon - 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

### ⭐⭐⭐⭐⭐ An excellent wood sealer and waterproofer!
*by I***T on 19 June 2026*

I am returning to leave this review having 3 years of experience with this product. I purchased Seal-Once Marine Penetrating Wood Sealer (clear) in June 2023, 3 years ago, and applied it to a large gazebo (from Costco) on my deck. Seal-Once has done a phenomenal job of protecting the wood, and the gazebo still looks almost new. My experience with prior brands of sealer/waterproofing caused me to do a lot of research while selecting which protection to use on my new gazebo. I live in sunny California so sun damage was my primary concern, but we average 54” of rain annually so I was also looking for water protection too. I have been pleasantly surprised that this product has really surpassed my expectations. I am a very satisfied customer and will continue to use Seal-Once Marine Penetrating Wood Sealer. (The attached photo was taken right after the gazebo was first installed.)

### ⭐⭐⭐⭐⭐ Good and simple
*by R***R on 16 July 2026*

Good product, easy to apply and can recoat almost immediately- save lots of time

### ⭐⭐⭐⭐⭐ Looks fresh and new
*by M***G on 22 March 2026*

Im in central FL and had this playhouse in the elements for maybe 1 week with heavy rain twice. After leaving it to dry it really dried out the cedar. Always kept it covered and only 6 months old. Glad I sealed it because it did not come sealed. This was easy to use and not messy. A little runny but worked well with a regular brush. Was able to get 2 coats on quickly since it dried fast. Dried very smooth, no problems with bubbling unless I was trying to get in the small spots and they would brush right off after a few minutes. Finish is smooth, hope this lasts. Great price and value compared to others.

## 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: 2026-08-13*