Can it be used on green treated lumber

Pressure treated lumber has to be dry.

Can you use a regular wood stain after applying?

Yes the clear MARINE can be painted or stained. Or you can purchase a tint for SEAL-ONCE and use the MARINE as a sealer and stain. MARINE Features: • Clear formula can be painted or stained after treatment • Tinted formula provides additional UV protection • Available in 11 semi-transparent tint colors • Eco-friendly, Non-toxic; will not harm pets, plants, people or marine life • Ultra-low VOC, Water based • Can be applied around or over fresh or salt water • Flexible, breathable barrier, Stabilizes & protects wood • Prevents warping, cupping, wood rot & decay • Resistant to salt water spray • Prevents mold, mildew & algae growth • Soap and water cleanup

I want to use this on a 6x6 wood beam at the opening to my walk-in shower (floor to ceiling). No direct shower spray. Will this seal it?

Yes you may use it for this specific application. As suggested in a comment down bellow, you would want to make sure that it is fully cured before using the shower. Typically it would take 48 hours to cure but it may take longer depending on the environment.

does this work for the interior of a sauna , safe to sit on?

It dries to a hard, smooth finish, is non toxic and nice to look at. Would be safe to sit on...other types of recreation may require caution.

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Marine

Product ID: 12191199

Details

Brand
Seal-Once
Item Weight
8.8 pounds
Item dimensions L x W x H
9 x 9 x 7
Material
Polyurethane
Style
Outdoor

🌿Ultra-low VOC, eco-safe

💧Waterproof barrier

☀️UV-stable protection

177378CFA

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Description

💧 Seal your wood’s future with marine-grade, eco-smart protection!

ECO FRIENDLY FORMULA - Water-based, ultra-low VOC, safe for pets and aquatic life
MARINE GRADE DURABILITY - UV-stable and saltwater-resistant for harsh outdoor environments
DEEP CELLULAR PENETRATION - Seals wood fibers beneath the surface for lasting protection
FAST DRYING EASY APPLICATION - Quick drying time with smooth, no-bubble finish for efficient projects
VERSATILE HIGH MOISTURE PROTECTION - Ideal for docks, decks, fences, and outdoor furniture near water

SEAL-ONCE Marine Penetrating Wood Sealer is a clear, water-based polyurethane formula designed to deeply penetrate and waterproof wood in high-moisture environments. It offers UV-stable, saltwater-resistant protection while being ultra-low VOC and safe for aquatic life. Perfect for outdoor furniture, docks, decks, and fences, it dries fast and forms a breathable, flexible barrier that preserves wood’s natural look and durability.

Specifications

ASIN	B00EQ89RYW
Best Sellers Rank	#3,808 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Household Stains
Brand	Seal-Once
Brand Name	Seal-Once
Color	Clear
Compatible Material	Wood
Customer Reviews	4.3 out of 5 stars 1,957 Reviews
Included Components	SEAL-ONCE MARINE - 1 Gallon Penetrating Wood Sealer, Waterproofer & Stain. Water
Item Dimensions	9 x 9 x 7 inches
Item Form	Liquid
Item Highlight	Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas
Item Weight	8.8 pounds
Item dimensions L x W x H	9 x 9 x 7 inches
Manufacturer	New Image Coatings, LLC
Material	Polyurethane
Material Type	Polyurethane
Model	7614
Number of Items	1
Number of Packs	1
Part Number	7614
Style	Outdoor
Style Name	Outdoor
Surface Recommendation	Walls,Wood
UPC	850336001024
Unit Count	128 Fluid Ounces
Water Resistance Level	Waterproof

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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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177378CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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