Can this be used on the insde of a motorcycles gas tank?

No, I think. There are other special coatings made for that specific application.

can it be used on bare metal or does the metal need to be etch primed first?

It is recommended that it be applied directly on bare metal. I used a wire brush attachment on a drill to remove as much of the rust off as possible, then painted directly on the metal.

I can remove the rust, from my table saw. I want prevent it from rusting again.

If you can remove all the rust. Then I would remove all of it clean it good and use a self etch primer and oil base paint. I wasn’t happy with Smaphy’s product. I followed their half as directions and it never cured.

Is this heat resistant and can it be used on engine components?

The heat resistance of this product is about 400 degrees.

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Description

🛠️ Stop Rust in Its Tracks — Protect Like a Pro!

TRUSTED PEACE OF MIND - Backed by a dedicated support team and 1-year warranty to keep your projects flawless.
ULTIMATE RUST DEFENSE - Transforms stubborn rust into a tough, moisture-sealing barrier for permanent protection.
EFFORTLESS APPLICATION - Simply prep and brush on—no complicated steps, just reliable rust elimination on any metal gear.
HEAT RESISTANT DURABILITY - Withstands extreme temperatures up to 350°F, ideal for engine bays and high-heat zones.
SEAMLESS SEMI GLOSS FINISH - Provides a sleek black primer coat that blends flawlessly with original metal surfaces.

SMAPHY 2-in-1 Rust Converter & Metal Primer is a 35 oz semi-gloss black oil-based paint that permanently converts rust into a durable, waterproof, and UV-resistant coating. Designed for outdoor metal surfaces, it offers heat resistance up to 350°F and doubles as a primer for a smooth, professional finish. Ideal for automotive, marine, and industrial use, it ensures long-lasting corrosion protection with easy brush-on application and a 24-hour full cure time.

Specifications

Brand	SMAPHY
Color	No.02 Semi-Gloss Black
Finish Type	Semi-Gloss
Size	35 oz
Item Volume	32 Fluid Ounces
Special Feature	UV Resistant
Paint Type	Oil
Surface Recommendation	Metal
Indoor/Outdoor Usage	Outdoor
Item Form	Liquid
Included Components	Rust Preventive Coating
Is Waterproof	True
Model Name	SMAPHY Semi-Gloss Black 2-in-1 Rust Converter & Metal Primer
Package Information	Tube
Color Code	#2F4F4F
Full Cure Time	24 Hours
Coverage	rust and corrosion protection
Water Resistance Level	Water Resistant
Manufacturer	SMAPHY
Dry Time In Hours	24
Part Number	AAZ-003
Item Weight	2 pounds
Product Dimensions	5.5 x 5.5 x 5.9 inches
Item model number	AAZ-003
Finish	Semi-Gloss
Item Package Quantity	1
Special Features	UV Resistant
Batteries Included?	No
Batteries Required?	No
Warranty Description	1 year

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