---
product_id: 357856859
title: "Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood"
brand: "seal-once"
price: "881 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/357856859-seal-once-nano-poly-penetrating-wood-sealer-with-polyurethane-premium
store_origin: PL
region: Poland
---

# UV-stable & fast drying Water-based polyurethane Deep penetrating sealant Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood

**Brand:** seal-once
**Price:** 881 zł
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal your style, protect your space—wood never looked this good!

## Quick Answers

- **What is this?** Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood by seal-once
- **How much does it cost?** 881 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/357856859-seal-once-nano-poly-penetrating-wood-sealer-with-polyurethane-premium)

## 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

- • **Ultimate Water Defense:** Penetrates deep to form a durable, water-resistant shield that protects wood from the elements.
- • **Eco-Friendly & Odorless:** Water-based formula with ultra-low VOCs ensures safe use around pets, plants, and people—no harsh fumes.
- • **Versatile Outdoor Armor:** Perfect for decks, fences, furniture, siding, and more—enhances longevity in high-traffic, weather-exposed areas.
- • **Natural Wood Beauty Preserved:** Flexible coating allows wood to age gracefully with a choice of gloss or matte finish, maintaining authentic character.
- • **Effortless Application & Cleanup:** Fast-drying, breathable finish cleans up easily with soap and water—no oil-based mess or hassle.

## Overview

Seal-Once Nano+Poly is a premium, water-based polyurethane wood sealer designed for superior waterproof protection. Its deep-penetrating formula creates a flexible, UV-stable barrier that safeguards wood surfaces like decks, fences, and outdoor furniture from wear, water damage, and UV exposure. With ultra-low VOCs and an odorless, eco-friendly composition, it’s safe for use around your home and garden. Available in a 1-gallon size with gloss or matte finish, it offers easy application and cleanup, preserving the natural beauty of wood while extending its lifespan.

## Description

Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood

## 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 |
|---------------|-------|
| Material | Wood |
| Brand | Seal-Once |
| Style | Protection |
| Item Weight | 4.02 Kilograms |
| Item dimensions L x W x H | 10 x 4 x 10 inches |
| Water Resistance Level | Water Resistant |
| Item Form | Liquid |
| UPC | 759126765002 |
| Unit Count | 1 Count |
| Color | Redwood |
| Surface Recommendation | Floor,Furniture,Siding,Wood |
| Manufacturer | UC Coatings |
| Part Number | SO7528 |
| Item Weight | 8.84 pounds |
| Product Dimensions | 10 x 4 x 10 inches |
| Item model number | SO7528 |
| Size | 1 Gallon |
| Finish | gloss, matte |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Wood
- **Brand:** Seal-Once
- **Style:** Protection
- **Item Weight:** 4.02 Kilograms
- **Item dimensions L x W x H:** 10 x 4 x 10 inches

## Images

![Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood - Image 1](https://m.media-amazon.com/images/I/810sKDwxnRL.jpg)
![Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood - Image 2](https://m.media-amazon.com/images/I/81Bk5UM+jiL.jpg)
![Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood - Image 3](https://m.media-amazon.com/images/I/81JAh4NPp2L.jpg)
![Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood - Image 4](https://m.media-amazon.com/images/I/813XrbLqduL.jpg)
![Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Redwood - Image 5](https://m.media-amazon.com/images/I/91KPx8TCB+L.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 & Redwood
- 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

---

## 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.pl/products/357856859-seal-once-nano-poly-penetrating-wood-sealer-with-polyurethane-premium](https://www.desertcart.pl/products/357856859-seal-once-nano-poly-penetrating-wood-sealer-with-polyurethane-premium)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-22*