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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2 in 1 Rust Converter & Metal Primer, Semi-Gloss Black Paint for Metal

Product ID: 497878258

Details

Brand
SMAPHY
Color
No.02 Black
Finish Type
Semi-Gloss
Included Components
rust converter
Item Volume
32 fluid
Model Name
Semi-Gloss

🔥One-coat rust conversion

⚙️Covers 100 sq ft metal surface

🛡️Heat & water sealed protection

Description

🛠️ Stop Rust in Its Tracks — One Coat, Total Metal Mastery!

UNIVERSAL METAL ARMOR - Perfect for everything from truck beds and trailers to marine equipment and outdoor railings—one can protects all your metal assets.
INSTANT RUST TRANSFORMATION - Paint directly over rust and convert it into a durable, matte black protective shield in just one coat—no sanding or priming needed.
PRO GRADE COVERAGE ADHESION - Converts up to 50μm of rust with peel-proof adhesion, covering up to 100 sq ft, trusted by professionals and DIY enthusiasts alike.
WORRY FREE PURCHASE SUPPORT - Backed by SMAPHY’s dedicated service team ready to replace or refund, giving you peace of mind with every can.
BUILT TO WITHSTAND THE ELEMENTS - Engineered to resist heat up to 350°F, water, salt, and UV exposure, ensuring your metal stays corrosion-free for years.

The SMAPHY 2 in 1 Rust Converter & Metal Primer is a professional-grade, water-based matte black coating that permanently stops rust by converting it in one coat. It seals metal surfaces against moisture, salt, heat (up to 350°F), and UV damage, covering up to 100 sq ft with peel-proof adhesion. Ideal for automotive, industrial, and outdoor metal applications, it requires no sanding or topcoat and comes with dedicated customer support for a confident purchase.

Specifications

ASIN	B0BHVG6DLY
Age Range Description	Adult
Best Sellers Rank	#831,721 in Automotive ( See Top 100 in Automotive ) #759 in Care Corrosion & Rust Inhibitors #8,481 in Oils & Fluids
Brand Name	SMAPHY
Color	No.02 Semi-Gloss Black
Container Type	Tube
Customer Reviews	4.3 4.3 out of 5 stars (165)
Dry Time In Hours	24
Finish Type	Semi-Gloss
Included Components	rust converter,brush,glove
Item Type Name	Rust Preventive Coating
Item Volume	32 fluid ounces
Item Weight	2 pounds
Manufacturer	SMAPHY
Model Name	Semi-Gloss Black
Model Number	AAZ-003
Part Number	AAZ-003
Size	35 Ounce (Pack of 1)
Special Features	UV Resistant
Specific Uses For Product	Home, automotive, industrial, fleet, farm, and various other uses
Surface Recommendation	Metal
Warranty Description	1 year

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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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