Search  for anything...

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

  • Based on 768 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $10.83 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by SEAL-ONCE / ANCHORSEAL

Arrives Tuesday, Jun 17
Order within 21 hours and 40 minutes
Available payment plans shown during checkout

Size: 1 Gallon


Color: 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 resist wood damage, deterioration, and protects 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 Dimensions LxWxH: ‎10 x 4 x 10 inches


Compatible Material: ‎Wood, Concrete


Water Resistance Level: ‎Water Resistant


Item Form: ‎Liquid


Manufacturer: ‎UC Coatings


Part Number: ‎S07502


Item Weight: ‎9.17 pounds


Product Dimensions: ‎10 x 4 x 10 inches


Item model number: ‎S07502


Size: ‎1 Gallon


Color: ‎Brown


Finish: ‎Gloss, Matte


Included Components: ‎Wood Sealer with Polyurethane


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: Tuesday, Jun 17

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Cedar color to orange.1/2 C. Redwood color, to 1 Gal Cedar. Stirr often, sand and wet new cedar.
Size: 1 Gallon Color: Cedar
Sand new cedar with 80 grit to remove mill glaze once installed (power sander, with the grain), sand the edges of each board ahead of installation as well (I did not, and learned). tons of work...When you're done sanding, blow off the dust with an air compressor or vacuum it up. Put the hose on "mist" wet the deck down until it's covered but not too soaked. You're raising the grain here. Let it dry almost, and start with the nano poly. I did a few boards at a time. waited about 15 minutes and hit them again with a second coat maintaining a wet edge. Came out good, it was hot, and I had to build shades with tarps as I worked, following the sun throughout the day. I re-wet the second half with the hose on "mist" ahead of staining it, as it had dried in the sun. First deck build, well see how it holds up. I plan on completely covering it up with a tarp all winter to protect it from the elements, well see what effect that has on it. ... show more
Reviewed in the United States on September 10, 2023 by michael forrest michael forrest

  • We use for everything wood
Size: 1 Gallon Color: Bronze Cedar
I used this on our large pillar, our fences and gates, our wood framed walkway(which does need to be done again after 2 years), the patio furniture is next and even the topper for our dog kennel to make a side table. Very pleased! The only thing to remember is it dries very fast in direct sunlight and you must go over it with a second coat quickly after the first or else it beads on itself (thats the waterproofing) and makes a weird looking coat that is probably not the desired result. I recommend picking a cool overcast day or work with the shade for best results! If your wood is exposed to the elements a lot, like our paver patio and walkway, then you will have to repaint every few years. We live in Montana so the elements really do a number on the wood but the sealer does it’s job, we just have to keep up with ours ... show more
Reviewed in the United States on August 23, 2023 by Nikky Nikky

  • The ultimate test-
Size: 1 Gallon Color: Clear
I purchased this sealer for a landscaping project. Delivered quickly, well packaged and intact. I have multiple 8"x8"x12' northern yellow pine timbers that i stained with dark walnut. They are rough cut and I chose not to sand them. I allowed the stain to fully dry and preformed the entire operation in the garage out of the sun and elements. Two generous coats are important for this sealer. Also it must be above 50°, which lengthened the process due to Ohio's weather mood swings. In the pale, the product is a solid white tint and thin as water. Give her an enthusiastic shake before opening. I applied with a 3" standard brush. No other products used besides minwax stain. Must be clean fresh surface for appropriate adhesion. Sand old finishes off. Goes on white and is easy to see missed spots. Being rough cut timber, it took a little more product to fully saturate. On a smooth sanded surface a little goes quite a long way. I have a photo to show drying stages- fresh coat, about 15mins dry time, and after about 30mins. At 30mins apply your second coat, just as heavy as the first. It's easy to work with. A little messy- don't be shy with it, but it covers great. Drys totally matte, no gloss at all. Looks just like they did with only stain which is just what I wanted. I have a second photo showing our first rain with them on the ground. I waited about a day for sealer to dry before laying them down. The water beads on top which is an excellent sign. I'm hopeful to at least get a few years out of this product before needing refinished. Most important to note ... These beams are laid over gravel and sand with drainage tile underneath, however they still are on the ground, exposed to moisture and in direct sun. This is really the ultimate test for a product like this. If this sealer can survive being exposed all day everyday I don't think there is a project it cant handle. I will update in about a year with photos and hopefully a success story. ... show more
Reviewed in the United States on April 28, 2023 by Morgan Morgan

  • Excellent Penetration
Size: 1 Gallon Color: Black
I used this on a deck that is 38 years old. Looks like new!
Reviewed in the United States on September 9, 2023 by Mine

  • Very watery
Size: 1 Gallon Color: Cedar
Stuff is awesome for water repell, but its like painting with water. Would be okay if you are spraying on.
Reviewed in the United States on August 21, 2023 by pittcountry

  • Very Pleased!
Size: 1 Gallon Color: Bronze Cedar
1/2023 - Update I didn't remember to post in 2022, but I wanted to add a couple of pictures. I will say that am not sure if the product is going to hold up through six years (horizontal surfaces like the deck) as it's going on 3 years and I feel like I am seeing wearing I didn't expect. However, I am not a professional. I applied it with a brush and, perhaps, I didn't apply it as well as I should have. I am not comfortable blaming the product alone. Some sections seem to be holding up better than others. Currently, the furniture is covered up, but most of it seems to be holding up better than certain areas of the deck. It should be noted that most of the deck is probably close to 30 years old if not older. That may be a factor as well. 6/2021 - Update I originally posted last November after treating wooden deck furniture. This June, I treated the deck after having it power washed. Still thrilled with the product and the way it's working. I am adding 2 additional pictures. The first is after the deck was power washed and the second is after I treated/painted it with this product. You can even see beaded water on the deck 🙂 11/2020 I am posting a review of this product along with some pictures. I will plan on updating it each year as the product is said to last approximately 6 on horizontal surfaces and 10 years on vertical surfaces. First, let me say that I wasn't exactly sure what to expect. When the product arrived I found it to be somewhat thin. When I realized it was water based, it made more sense that it wasn't very thick. That being said, I have been very pleased thus far with the results. I did the application with a brush. As you will see in the pictures, it does what it needs to do when it comes to rain. I also wasn't sure what color to get. I picked the bronze cedar and when used on new wood, that is the color you get. It is beautiful! You will see the color is not quite the same (seems a bit darker depending on the light) when used on wood that has already been treated with a previous product (I don't recall what product or color was on the furniture that I re-treated) It doesn't bother me, though, that the color isn't the same. Now for the pictures. The picture of the deck boards that I treated show the true color. I have not yet treated the rest of the deck as I want to make sure to power wash and clean it first and won't be able to do that till spring. When you see the picture of the boards with the water beaded on them and then see the boards around it don't have beaded water, it's because the rest of the deck has not yet been treated. The pictures of the furniture show the "before" of one of the small end tables and the "after." It also shows an "after" of another chair and table set and big picnic table. Mind you, the furniture wasn't in the best of condition. The last time it was treated was several years ago. I am very pleased with the way this product has worked so far. If you do happen to see an area that was missed, it is NOT the fault of the product, but of the person doing the application (me!) I look forward to treating the rest of the deck (and furniture) in the spring with this excellent product! ... show more
Reviewed in the United States on November 12, 2020 by pamomof3 pamomof3

Can't find a product?

Find it on Amazon first, then paste the link below.