Seal-Once Nano+Poly Penetrating Wood Sealer with Polyurethane - Premium Waterproof Sealant -1 Gallon & Brown
Condition: New
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Availability:
In Stock.
Arrives
Wednesday, Mar 18
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Size: 1 Gallon
Color: Grey,Brown
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.
Material: Polyurethane
Brand: Seal-Once
Style: Protection
Item Weight: 4.19 Kilograms
Item dimensions L x W x H: 10 x 4 x 10 inches
Material: Polyurethane
Brand: Seal-Once
Style: Protection
Item Weight: 4.19 Kilograms
Item dimensions L x W x H: 10 x 4 x 10 inches
Water Resistance Level: Water Resistant
Item Form: Liquid
UPC: 850009973016
Unit Count: 128 Fluid Ounces
Number of Items: 1
Color: Grey,Brown
Surface Recommendation: Furniture,Siding,Wood
Manufacturer: UC Coatings
Part Number: S07502
Item Weight: 9.22 pounds
Product Dimensions: 10 x 4 x 10 inches
Item model number: S07502
Size: 1 Gallon
Finish: gloss, matte
Coverage: High coverage, up to 400 sq. ft. per gallon
Batteries Included?: No
Batteries Required?: No
Date First Available: May 1, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Mar 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 2 Gallon
Color: Light Brown
This is the best deck stain and sealer I have ever used. It looks great (we used light brown tint on cedar) and has been durable through heat, rain, snow and ice. Caution must be used in the application to not apply in direct intense sunlight as it can cause variability in the color and appearance (this is noted in the directions)
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Reviewed in the United States on February 15, 2026 by Willie
Size: 1 Gallon
Color: Grey,Brown
Amateur wood worker. teated lumber has issues with standard paints when the wood is new. Did some research that poly or resin were the best paint solution. Rebuilding the deck I built 25 years ago and one of the issues treated joists deteriorated. I determined I wasn't making that mistake 2x and settled on this product. I ordered the brown color. I applied with a brush but product well suited for a sprayer. Product absorbs quickly and you do want to follow with second coat so ensure your job is divided in the 15 minute time slots for second coat. Because these are joists I did not spend more than a light sanding before application. I really like how the brown tint came out on treated lumber and it appears to protect the wood well from moisture. The product is very easy to apply with a brush and goes a long ways in spite of the two coats. I highly recommend this product on treated wood, in my case I think it will do well as the poly really soaks into the wood. I suspect it will hold up very well, but only time will tell.
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Reviewed in the United States on October 2, 2025 by SirRahKnight SirRahKnight
Size: 1 Gallon
Color: Clear
I was surprised when I opened the can and saw a white liquid. However the sealer dries perfectly clear. One advantage of the white when applying is that you can see better where you have painted. We were sealing a large wood sculptured black bear. It had weathered and cracked thru the first winter. We stained black and let the stain dry for at least a week before applying the sealer. Use good brushes as water clean up is easy and thorough. Best to pour into smaller container or roller tray.
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Reviewed in the United States on September 21, 2025 by Fairdealdave
Size: 1 Gallon
Color: Clear
Great stuff! Applied to our bare pine ranch table and benches. It goes a long way and the finish is nice, showing the wood grain and color, though slightly milky. You wouldn't know it if I didn't tell you. I light sanded the wood, vacuumed and wiped down with a wet tack cloth. The sealant goes on easily with a brush and a little goes a long way. Didn't use 1/2 gallon to cover a 120" x 40' table and two 108" x 16" benches, top, bottom and legs with two coats! It did require two people to get the second coat down (instructions said to apply second coat when first is damp), as in the Arizona heat, it was drying pretty fast. The ranch table is out on the covered patio and now I can wipe the dust off in minutes. I'm very please with this product.
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Reviewed in the United States on May 8, 2025 by Martin
Size: 1 Gallon
Color: Clear
This is my fourth time getting this product. The first time I got it, it came with UV protection, which is rare for clear sealants. I LOVE how easy this is to apply, it soaks in like water and just works. I used the UV protection one on my tool shed 4 years ago and till today it hasn't grayed! But then I guess they took that off the shelf, because I thought I bought the same product and sprayed it on my cedar fence the same as my shed, but it's completely grayed now. Bottom line: easy to use, feels really natural and safe to use (no smell and you get a little latex layer on your skin that's easy to scrape off), complete protection from mold and rot, but will not prevent graying anymore. Yes, put the second coat on fast if you're going to. In my experience it hasn't needed multiple coats when you apply the first thick enough. Hey Seal-Once! Bring back the UV protection formula, it really worked and the natural alternatives out there are crazy expensive!
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Reviewed in the United States on March 28, 2024 by Darin Somma
Size: 1 Gallon
Color: Black
I've ordered 3 gallons so far. I'm using this to stain the wood deck of a utility trailer. The first gallon was perfect, pitch black and very stain like in terms of consistency. It poured out like water and turned the wood completely black which is what I bought it to do. After realizing I needed more to do a second and even a third coat, I ordered another gallon. This gallon was a much thicker consistency and appeared to be a bluish gray. It had the consistency of paint vs stain. It also did not apply dark at all, and had a gray tint which eventually turned into a dark gray stain. I thought this might just be a bad gallon. I ordered a second gallon which arrived today. The package was crushed and stain was leaking out all over the concrete. The Amazon driver clearly took a picture from an angle of the box that showed no damage. So about 1/4 of the gallon was lost due to leakage. I could instantly tell that the consistency in color was the same as the second gallon I purchased. It's gray blue and very thick compared to the first gallon. I'm very frustrated that I have a trailer taken apart that I can't finish until I get a gallon that is mixed correctly.
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Reviewed in the United States on July 26, 2025 by BWTruck BWTruck
Size: 2 Gallon
Color: Redwood
it is water proof. there is not much review online for this product, but I went ahead and gave it try. I used it to paint the my deck floor. it turns out great. when it rains, i can see that the water beads up and runs off, instead of soaking in the wood. love it!!
Reviewed in the United States on January 23, 2026 by 007