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

4.4/5
Product ID: 23682665
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Details

  • Material
    Wood
  • Brand
    Seal-Once
  • Style
    Protection
  • Item Weight
    8.7 Pounds
  • Item dimensions L x W x H
    10 x 4 x 10
Fast-drying with easy soap & water cleanup
🌿Ultra-low VOC, eco-friendly & safe for plants & pets
💧Penetrates deep for lasting waterproofing

Description

💼 Seal your style with the ultimate waterproof wood armor—because your space deserves the best!

  • VERSATILE OUTDOOR ARMOR - Perfect for decks, fences, furniture, siding, and even log homes—your all-in-one wood defense solution.
  • ECO CONSCIOUS ODORLESS - Water-based formula with ultra-low VOCs ensures a safe, odor-free application around your home and garden.
  • UV STABLE FLEXIBLE FINISH - Protects wood from sun damage while allowing natural aging with a breathable, matte polyurethane coat.
  • EFFORTLESS APPLICATION CLEANUP - Fast drying and cleans up easily with soap and water—no harsh chemicals, no hassle.
  • DEEP PENETRATION NOT JUST SURFACE - Creates a durable, water-resistant shield beneath the wood surface for unmatched protection.

Seal-Once Nano+Poly is a premium, water-based polyurethane wood sealer designed for deep penetration and long-lasting waterproof protection. Its ultra-low VOC, odorless formula is safe for plants, pets, and people, making it ideal for high-traffic outdoor wood surfaces like decks, fences, and furniture. The fast-drying, UV-stable finish offers a flexible, breathable matte coat that enhances wood’s natural aging while providing superior durability and easy cleanup.

Specifications

MaterialWood
BrandSeal-Once
StyleProtection
Item Weight8.7 Pounds
Item dimensions L x W x H10 x 4 x 10 inches
Compatible MaterialWood
Water Resistance LevelWaterproof
Item FormLiquid
UPC854734005042
Unit Count128 Fluid Ounces
Number of Items1
ColorClear
Surface RecommendationFloor,Furniture,Siding,Wood
ManufacturerU-C Coatings
Part NumberSO7500
Item Weight8.73 pounds
Product Dimensions10 x 4 x 10 inches
Item model numberSOP 500G
Is Discontinued By ManufacturerNo
FinishMatte
Item Package Quantity1
Included ComponentsWood Sealer with Polyurethane
Batteries Included?No
Batteries Required?No

Have a Question? See What Others Asked

do you need to sand the wood first to make it smooth before applying the sealer?
What is the difference in the Nano+Poly and the Marine?
Should i use wood putty/filler before sealing or after sealing by seal-once nano+poly?
Can this be applied with a sprayer? thanks

Reviews

4.4

All from verified purchases

B**B

Follow instructions

I used this item to protect the wood in the bed of my classic truck. After cleaning and sanding the wood the application of this NANO began. Easily applied with a paint brush,, following the directions on the can I applied 6 coats to all sides. Did I need to apply 6 coats,,, probably not,, I just wanted to. Why 6 ? That is when I had felt I had plenty of protection. But it may well have had protection enough before 6 coats. Looks beautiful and I am very happy. It has not been long enough to determine how well it stands up to environment and use but I feel confident.

M**N

Get the second coat on while first coat is damp.

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.

M**D

Investment

A little more reddish orange than desired but it would be a great fence color. Tried on previous paint and wood with newly stripped off paint. Is shinier and lighter with the prior coat stripped off. Good coverage to last the wood.

J**.

Water resistant

Used on a brand new deck. Absorbed very well. Coverage was good. Dried quickly for a second coat. Great water repellent. Clear in color. Has held up for a year. Good value. Soap and water clean up.

M**9

Easy to apply and looks great once it dries.

Easy to apply and did a great job of sealing the wood decking on my utility trailer. Looks great once it dries.

B**E

Good deal works just fine as it should

Does the job works as it should

J**R

Clear Nano + Poly not an aesthetic improvement over original Clear Nano

I used the Nano clear in fall 2021 on my new cedar plank deck. I was satisfied with the Nano, though it did not last as long as I had hoped. In spring of 2023, I decided it needed to be resealed, completed in June. I saw bought the newly introduced Nano + Poly this time, but am less satisfied with the result this time. It may last longer, but Nano + Poly seems to have some disadvantages. First, it causes water to remain beaded up on the deck much longer after a rain. The standing water accumulates dirt/dust before it dries and when it does dry, it leaves a dirt spot. The dirt can be washed/scrubbed off, but it is a maintenance issue if you care about how it looks. Second, I spent a lot of time prepping the deck for this reseal job (brush scrubbed with cleaner, rinsed with oxalic and then sodium percarbonate solutions to neutralize the oxalic acid, light sanding, two coats of Nano + Poly, brush applied 20 minutes apart). Now there are small black spots sealed under the new coat that make the deck look dirty. I was hoping this was just due to having cleaned off some of the silver-grey patina that had developed, and that it would even out over the summer as it greyed again. Not so. Probably would have needed to thoroughly sand the entire deck to make it look as good as it did after the first coat. Next time, I will probably rent a sander, take off the Nano + Poly, and just use Nano only.

M**N

The ultimate test-

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.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Seal Once Nano Poly Penetrating Wood Sealer With Polyurethane Premium | Desertcart Cyprus