Can this be used under water?

Hey there, Thank you for reaching out. It technically can be used below the waterline but it's not recommended if the boat will see > 24 hours of submersion at a time

The label says it is "uv stable", what does that mean? does it provide uv protection?

Yes. Based on the description from Jamestown this is thinned varnish. Varnish has good UV protection but nothing last forever in the sun which is why varnish requires another couple coats every year. This is meant for the first couple of coats in about an 8 coat varnish job. Least that is how I use it. Your option is to thin your own or I have enough varnishing from bare wood that I bought this for convenience for the first couple coats then following with in my case Lust varnish also from Jamestown. I really like the Lust since I can overcoat again in about an hour versus a day for the other varnishes I had been using. Good luck!

Can total boat epoxy be used over the top of this?

I would not put epoxy over any sealer. ......

Is it a oil base water sealant or a stain coloring? What are the ingredients?

It is oil based and delivers a relatively clear coat that fills the wood grain quickly in preparation for varnish. However, you can add a solid stain directly to the sealer to get the “color” you desire.

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Wood Sealer Pre Varnish Primer for Boats & Wood - Quart | Marine Grade Sanding Sealer & Varnish Primer; UV Inhibitors; Wooden Boats, Yacht Brightwork, Furniture, and Woodworking

Product ID: 39364073

Details

Brand
TotalBoat
Finish Type
Gloss
Item Form
Liquid
Liquid Volume
1 Quarts
Material
Wood

⏱️Dries fast, recoats in 2 hrs

☀️Deep UV protection

🛥️Marine-grade durability

¥17141

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Description

🛥️ Seal it like a pro, shine like a boss!

FAST DRY FORMULA - Recoat in as little as 2 hours—no sanding needed between coats
VERSATILE APPLICATION - Brush, roll, or spray on all wood types including oily hardwoods
SEALS SMOOTHS BARE WOOD - Creates a flawless base for premium varnish finishes
MAXIMIZES VARNISH EFFICIENCY - Prevents varnish absorption so finish coats shine brighter and last longer
UV DEFENSE DOWN TO THE GRAIN - Prevents cracking and peeling for long-lasting beauty

TotalBoat Wood Sealer is a premium one-part marine-grade sanding sealer and pre-varnish primer designed for all wood types, including teak and mahogany. It deeply penetrates and seals wood grain, providing UV protection that prevents cracking and peeling. Fast drying with no sanding required between coats, it creates a smooth, stable foundation that maximizes the durability and appearance of your varnish finish. Ideal for interior and exterior use, this clear amber sealer covers 60-100 sq ft per quart and is compatible with all 1-part marine varnishes.

Specifications

ASIN	B01M0MZ89O
Best Sellers Rank	#31,684 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #23 in Paint Primers & Sealers
Brand Name	TotalBoat
Compatible Material	Engineered Wood, Wood
Coverage	60-100 sq ft per quart
Customer Reviews	4.7 4.7 out of 5 stars (403)
Finish Types	Gloss
Global Trade Identification Number	00811932022400
Included Components	Sealer
Item Form	Liquid
Liquid Volume	1 Quarts
Manufacturer	TotalBoat
Manufacturer Part Number	496580
Material Type	Wood
UPC	811932022400
Unit Count	32.0 Fluid Ounces

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥17141

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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