---
product_id: 23682665
title: "SEAL-ONCE Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes"
brand: "seal-once"
price: "135797CFA"
currency: XOF
in_stock: true
category: "Seal Once"
url: https://www.desertcart.sn/products/23682665-seal-once-nano-poly-wood-sealer-and-waterproofer-clear-1
store_origin: SN
region: Senegal
---

# UV-stable, flexible waterproof barrier Water-based, eco-friendly formula Deep-penetrating, long-lasting protection SEAL-ONCE Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes

**Brand:** seal-once
**Price:** 135797CFA
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smart, live stylish — protect your wood the future-proof way!

## Quick Answers

- **What is this?** SEAL-ONCE Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes by seal-once
- **How much does it cost?** 135797CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/23682665-seal-once-nano-poly-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-Smart Sealant:** Ultra-low VOC and odorless for a safer, greener home environment.
- • **Ultimate Wood Armor:** Penetrates deep to shield wood from moisture and wear, not just a surface coat.
- • **Seal-Once Confidence:** Protect your wood with a pet- and plant-safe formula that lets wood age naturally.
- • **Effortless Application:** Fast-drying, soap-and-water cleanup means no hassle, no toxins.
- • **Versatile Outdoor Shield:** Perfect for decks, fences, log homes, and even around plants and water.

## Overview

NANO + POLY is a premium water-based polyurethane wood finish designed for high-traffic and outdoor wood surfaces. It offers deep-penetrating, waterproof protection with UV stability and ultra-low VOCs, ensuring a safe, odorless application that enhances wood durability while allowing natural aging. Ideal for decks, fences, log homes, and more, it combines eco-conscious innovation with professional-grade performance.

## Description

Buy SEAL-ONCE Nano+Poly Clear Penetrating Wood Sealer with Polyurethane - 1 Gallon. Water-Based, Low-VOC, waterproofer & Stain for Decks, Fences & Log Homes.: Everything Else - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- WATER-BASED POLYURETHANE WOOD FINISH: Our sealant provides top-notch protection against wear and tear in high traffic areas. It's odorless and ideal for use on wood siding, log homes, swing sets, outdoor furniture, wooden deck and fence, and more.
- WOOD SEALANT: Unlike many sealers that only form a topcoat, our protector penetrates below the surface to create a long-lasting, water-resistant shield around the wood. It helps protect against the elements.
- FLOOR SEALER APPLICATOR: Our premium gloss is ultra-low VOC and great for enhancing the extended life of your exterior flooring. The sealant can be safely applied around your home, landscaping, vegetation, or over any water area.
- WATERPROOF SEALER: Ditch the oil-based sealers and choose a UV-stable coating option. Our fast-drying liquid creates a flexible, breathable barrier and provides a no-fuss, easy clean-up with soap and water, as it allows the wood to grey naturally.
- 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 |
|---------------|-------|
| ASIN | B015C8AC1Q |
| Best Sellers Rank | #6,242 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #47 in Hardware Sealers |
| Brand Name | Seal-Once |
| Color | Clear |
| Compatible Material | Wood |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,485) |
| Item Dimensions | 7 x 7 x 9 inches |
| Item Form | Liquid |
| Item Weight | 8.7 Pounds |
| Manufacturer | U-C Coatings |
| Material Type | Wood |
| Model | SOP 500G |
| Number of Items | 1 |
| Part Number | SO7500 |
| Style Name | Protection |
| Surface Recommendation | Floor,Furniture,Siding,Wood |
| UPC | 854734005042 |
| Unit Count | 128 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Seal-Once
- **Item Weight:** 8.7 Pounds
- **Item dimensions L x W x H:** 7 x 7 x 9 inches
- **Material:** Wood
- **Style:** Protection

## Images

![SEAL-ONCE Nano+Poly Wood Sealer and Waterproofer, Clear, 1 Gallon | With Polyurethane, Water-based, Low-VOC, Waterproofer & Stain, For Decks, Fences & Log Homes - Image 1](https://m.media-amazon.com/images/I/81wAqrTQlgL.jpg)

## Available Options

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

## Questions & Answers

**Q: do you need to sand the wood first to make it smooth before applying the sealer?**
A: Sanding exterior wood "smooth" is a very bad idea.  Exterior wood needs to be sanded to open up the pores of the wood for deeper penetration. Sand with 80 grit sandpaper, nothing finer. Most times, cleaning with Seal-Once All Wood Cleaner would be a better choice. It would also depend on the type of wood and the project.......... siding or deck, exterior furniture? Call us.

**Q: What is the difference in the Nano+Poly and the Marine?**
A: I believe that the marina stain is has a special formula for freshwater and saltwater

**Q: Should i use wood putty/filler before sealing or after sealing by seal-once nano+poly?**
A: Use a top-quality name-brand stainable/paintable outdoor (or interior-exterior) wood filler of genuine wood fibers that will provide expansion and contraction with the surrounding wood. Fill no more than 1/8th to 1/4” per layered application until flush with the surrounding surface--allow ample time for each layer to cure. Sand top layer flush. If choosing to stain, do so next to match if surrounding hue. After the final stain coat dries, apply 1-3 liberal coats of wood hardener, allowing it to dry between each application. If panting, skip stain and then paint over the top coat of dried wood hardener. It should last for the life of the wood in most cases.

**Q: Can this be applied with a sprayer?  thanks**
A: Yes, but you must immediately back brush.   Brush the area that you just sprayed. Apply the second coat while the first coat is still wet.  Within 5-15 minutes.

## Frequently Bought Together

- Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -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
- Double Thick Chip Paint Brush - Wood Stain Brushes for Painting Walls and Fence Staining - Wooden Handle Masonry Paintbrush for Varnish, Paste, Gesso and Limewash (4 inch)

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**Shop now:** [https://www.desertcart.sn/products/23682665-seal-once-nano-poly-wood-sealer-and-waterproofer-clear-1](https://www.desertcart.sn/products/23682665-seal-once-nano-poly-wood-sealer-and-waterproofer-clear-1)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-06-23*