Can this product be used over polyurethane?

I don't think it can be used over polyurethane as it is made only for direct application to wood.

Can this be used on a teak shower seat that gets wet?

Yes. Watco Teak oil + stain is good for interior and exterior projects. Here are some key features: - Offers superior protection for dense woods such as teak, mahogany, and rosewood - Penetrates and protects for an outstanding UV and moisture-resistant finish - Can be applied by wiping, brushing, or spraying for easy application - Great for marine use above the waterline - Self-settling consistency leaves no brush strokes behind - Covers up to 100 square feet per quart - Made in the USA

Is it recommended or necessary to vanish/seal cote over the top of this product?

I did not need to varnish or seal this after using this product. It works very well.

Watco Teak Oil Stain Greystone

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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NT$6750

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🪵 Elevate your wood game with Watco’s Greystone glow—protection and style that won’t wait.

FAST TRACK FINISH - Ready for light use in under half a day, so your outdoor spaces look flawless faster.
GENEROUS COVERAGE - Covers up to 190 sq. ft. per quart—maximize your project with fewer cans and less hassle.
ONE STEP WOOD REVIVAL - Effortlessly enhances dense woods like teak, rosewood & mahogany with color + protection in a single coat.
MARINE GRADE DURABILITY - Specially formulated for above-water marine use, delivering superior UV and moisture defense.
TIMELESS GREYSTONE GLOW - Transforms wood surfaces with a rich, hand-rubbed finish that elevates any deck or furniture piece.

Watco Teak Oil + Stain Greystone is a premium one-step oil-based stain designed for dense woods like teak, rosewood, and mahogany. It offers superior UV and moisture resistance, ideal for both indoor and outdoor applications including marine use above the water line. With fast drying times (8-10 hours) and coverage of up to 190 sq. ft. per quart, it delivers a rich, warm finish that enhances wood appearance while providing durable protection.

Specifications

ASIN	B08VR58W99
Additional Features	Durability, Versatility, UV and Moisture Resistance
Base Material	wood-based
Best Sellers Rank	#193,421 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #298 in Household Stains
Brand	Watco
Brand Name	Watco
Coating Description	A one-step stain providing superior color, finish, and protection against UV and moisture for dense woods, for both interior and exterior use
Color	Greystone
Compatible Material	Wood, Marine Materials
Container Type	Can
Coverage	160-190 sq. ft.
Customer Reviews	4.2 out of 5 stars 36 Reviews
Finish Types	Oil
Global Trade Identification Number	10020066497146
Included Components	Teak Oil with Stain
Item Dimensions	8.75 x 8.75 x 5.25 inches
Item Type Name	Teak Oil Plus Stain
Liquid Volume	1 quarts
Manufacturer	Rust-Oleum
Manufacturer Part Number	348759
Material	Stain
Material Type	Stain
Model Name	Teak Oil Plus Stain
Model Number	348759
Number of Items	4
Number of Packs	4
Paint Type	Oil
Recommended Uses For Product	exterior-and-interior
Size	Quart (4 Pack)
Style Name	Wood Stain
Surface Recommendation	Wood
Unit Count	128 Fluid Ounces

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NT$6750

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered 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 Taiwan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.