---
product_id: 296285150
title: "Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural"
brand: "seal-once"
price: "฿11696"
currency: THB
in_stock: true
reviews_count: 8
category: "Seal Once"
url: https://www.desertcart.co.th/products/296285150-seal-once-marine-premium-wood-sealer-waterproof-sealant-wood-stain
store_origin: TH
region: Thailand
---

# Ultra-low VOC, eco-friendly & safe for aquatic life Waterproof barrier lasting up to 10 years UV-stable formula protects against sun damage Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural

**Brand:** seal-once
**Price:** ฿11696
**Availability:** ✅ In Stock

## Summary

> 💧 Protect your wood like a pro—seal it once, enjoy it for a decade!

## Quick Answers

- **What is this?** Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural by seal-once
- **How much does it cost?** ฿11696 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/296285150-seal-once-marine-premium-wood-sealer-waterproof-sealant-wood-stain)

## 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-Conscious Formula:** Water-based and non-toxic, safe for pets, plants, and aquatic environments
- • **Decade-Long Durability:** Engineered to withstand saltwater spray and harsh outdoor elements for up to 10 years
- • **Effortless Maintenance:** Cleans up easily with soap and water—no harsh chemicals needed
- • **All-in-One Marine Shield:** Seals, stains, and protects wood with a single, easy application
- • **Deep Cellular Penetration:** Fast-drying sealer penetrates wood fibers for flexible, breathable protection

## Overview

Seal-Once Marine Premium Wood Sealer is a 1-gallon, water-based polyurethane formula designed to waterproof, stain, and protect outdoor wood surfaces. Its UV-stable, eco-friendly composition creates a durable, flexible barrier that penetrates wood fibers at the cellular level, offering up to 10 years of protection against water damage, salt spray, and sun exposure. Ideal for decks, docks, and outdoor furniture, it’s easy to apply and clean, making it the smart choice for long-lasting wood preservation.

## Description

desertcart.com: Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural : Sports & Outdoors

Review: great product and dries clear! Easy to apply. - Absolutely wonderful product. I was skeptical at first to purchase this item, considering I've always purchased deck stain at the local box stores. I'm so very glad I did! Works very well, easy to apply & appears is so much better than the name brand stains that only last about 3 years top! We'll see in a couple of years if the 10 years advertised holds up to the hype! Addendum: added photos and a note that 2 coats applied and still have over 1/3 of 5 gal bucket left over. The difference of shading is because of my poor power washing. Did it at night.
Review: Standout product - I purchased this product to refinish my small teak table for our patio and two wine barrels I’m restoring. I sanded the old finish for the table with 150 grit paper followed by a finish sanding using 220 grit. I used a small synthetic brush to apply the product. Following the instructions I applied the first coat being careful not to apply too much to avoid ponding. It went on smoothly, I applied a second coat after 15 minutes or so, as instructed on the label. It restored the teak to the original color and beauty. I was able to refinish the top of one of my barrels using the same procedures, except only one sanding with the 150 grit. It turned out great. It was easy to clean the brush as this is a water based product. I found Seal-Once to be a great value for the money. Time will tell how durable it is but I’m confident it will be.

## Features

- MARINE SEALANT: Our liquid formula creates a UV-stable coating for protection against the elements, saltwater spray, and water damage. Marine is a great protector for outdoor furniture, thermally modified wood, and boat docks. Marine is safe for use over open water and is non-hazardous to aquatic life.
- DECK STAIN: It's water-based, ultra-low VOC, great for enhancing the extended life of your flooring, siding, and porch. The paint forms a water-resistant shield around wood fibers at the cellular level to help preserve the natural color.
- WATERPROOF WOOD SEALER: The wood used on boat docks, decks, and retaining walls near rivers, lakes, oceans, and ponds is subjected to constant moisture. We crafted a sealer, remove stain, and finish all in one, specifically for these installations.
- WOOD SEALANT: Our fast-drying protector penetrates wood below the surface, coating the wood fibers at the cellular level, which creates a long-lasting, flexible, breathable barrier. It provides a no-fuss, easy clean-up with soap and water.
- SEAL-ONCE: Our user-friendly wood sealers and stains are an effective way to protect your lumber or concrete against water damage. When you use Seal-Once, you have the satisfaction of knowing our products will not harm pets, plants, or people.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Seal-Once |
| Color | Natural |
| Material | Polyurethane |
| Model Name | Marine |
| Size | 1 Gallon |
| Surface Recommendation | Wood |

## Product Details

- **Brand:** Seal-Once
- **Color:** Natural
- **Material:** Polyurethane
- **Model Name:** Marine
- **Surface Recommendation:** Wood

## Images

![Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural - Image 1](https://m.media-amazon.com/images/I/71-kHKQX+IL.jpg)
![Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural - Image 2](https://m.media-amazon.com/images/I/71AFLJyfEQL.jpg)
![Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural - Image 3](https://m.media-amazon.com/images/I/813XrbLqduL.jpg)
![Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural - Image 4](https://m.media-amazon.com/images/I/81JAh4NPp2L.jpg)
![Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural - Image 5](https://m.media-amazon.com/images/I/81ddjsvUDHL.jpg)

## Available Options

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

## 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 product and dries clear! Easy to apply.
*by R***W on November 10, 2025*

Absolutely wonderful product. I was skeptical at first to purchase this item, considering I've always purchased deck stain at the local box stores. I'm so very glad I did! Works very well, easy to apply & appears is so much better than the name brand stains that only last about 3 years top! We'll see in a couple of years if the 10 years advertised holds up to the hype! Addendum: added photos and a note that 2 coats applied and still have over 1/3 of 5 gal bucket left over. The difference of shading is because of my poor power washing. Did it at night.

### ⭐⭐⭐⭐⭐ Standout product
*by K***N on September 4, 2025*

I purchased this product to refinish my small teak table for our patio and two wine barrels I’m restoring. I sanded the old finish for the table with 150 grit paper followed by a finish sanding using 220 grit. I used a small synthetic brush to apply the product. Following the instructions I applied the first coat being careful not to apply too much to avoid ponding. It went on smoothly, I applied a second coat after 15 minutes or so, as instructed on the label. It restored the teak to the original color and beauty. I was able to refinish the top of one of my barrels using the same procedures, except only one sanding with the 150 grit. It turned out great. It was easy to clean the brush as this is a water based product. I found Seal-Once to be a great value for the money. Time will tell how durable it is but I’m confident it will be.

### ⭐⭐⭐⭐⭐ Awesome product for sealing cedar
*by K***E on January 1, 2026*

Used this to seal our cedar deck that I built. Goes on smooth, used a pump sprayer and then went over with a paint roller. Has a milky color when first applying and then dries clear. Applied two coats back to back. Deck is about 450 square feet and I used almost two gallons. Only complaint is the handle, I had one break off while pouring product in to my pump sprayer. Beads water like crazy and brings out the beautiful color of the wood. Smooth to walk on and very easy to clean once dry.

## Frequently Bought Together

- Seal-Once Marine Premium Wood Sealer - Waterproof Sealant - Wood Stain and Sealer in One - 1 Gallon Natural
- Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement
- Linzer 3121 0400 Stain Waterproofing Brush, 4 in.,Brown,WM 3121-0400

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-24*