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 TotalBoat

Product ID: 712517018

Details

Brand
TotalBoat
Finish type
Gloss
Liquid volume
1 Quarts
Material
Wood
Recommended uses for product
outdoor

⚡Fast drying, no sanding

🌲Seals all wood types

🛡️UV-filtered protection

SAR 342

Duties & taxes included

In stock

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Description

🪵 Seal it, shine it, own it — flawless wood finishes made effortless!

FLAWLESS FINISH PREP - Creates a smooth, clear base that enhances natural grain and color under varnish.
EFFORTLESS APPLICATION - No sanding needed between coats—save time and skip the hassle.
INDOOR OUTDOOR READY - Durable enough for outdoor use above the waterline, perfect for any project.
VERSATILE COMPATIBILITY - Seals all woods including oily teak and plywood for flawless finishes.
ULTIMATE WOOD PROTECTION - UV filters shield wood fibers, preventing cracking and varnish delamination.

TotalBoat Wood Sealer is a premium clear wood primer that seals and smooths all wood types—including oily and plywood—without sanding between coats. Featuring fast drying and built-in UV filters, it prevents cracking and varnish failure while enhancing natural wood grain. Ideal for indoor and outdoor use, it prepares surfaces perfectly for TotalBoat Lust or Gleam 2.0 varnish, delivering durable, glossy finishes with less effort. Proudly made in the USA and trusted by boaters and woodworkers alike.

Specifications

ASIN	B01M0MZ89O
ASIN	B01M0MZ89O
Best Sellers Rank	#85,470 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #509 in Hardware Sealers
Brand Name	TotalBoat
Compatible Material	Wood
Coverage	60-100 sq ft per quart
Customer Reviews	4.7 4.7 out of 5 stars (373)
Customer reviews	4.7 4.7 out of 5 stars (373)
Date First Available	22 March 2025
Finish Types	Gloss
Global Trade Identification Number	00811932022400
Is Discontinued By Manufacturer	No
Item Form	Liquid
Liquid Volume	1 Quarts
Manufacturer	Jamestown Distributors
Manufacturer	Jamestown Distributors
Manufacturer Part Number	496580
Manufacturer reference	496580
Material Type	Wood
Package Dimensions	11.68 x 10.92 x 10.92 cm; 953 g
Recommended Uses For Product	outdoor
UPC	811932022400
Unit Count	1.0 Count

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