how is this different from a rust converter

It is not different. It IS rust converter. Extend is the Loctite brand name for its rust converter.

My frame has tiny spotted/speckled rust areas. Will this product still adhere okay with paint inbetween the many rust spots?

It worked fine for me and I had a similar situation. If the area is not too big, you could just sandpaper it, then put the loctite stuff on and paint it later.

The description says it's an aerosol, but the picture looks like a bottle. Which is it?

Judith,The Locktite product that I have purchased are the small bottles with applicator brushes for delicate work. I have no experience with the 235285 product. I would say just by looking at the picture that it is not an aerosol. I hope you find a definite answer from someone who has actually purchased the Henkel 235285 product. Good luck! The product which I use (small bottle with applicator brush does a good job.

Loctite Extend Rust Neutralizer

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Description

🛠️ Don’t Replace, Renovate — Rust Repair Made Effortless!

RAPID RUST RESCUE - Sets in just 20 minutes per coat for swift project turnaround
EFFORTLESS APPLICATION - Simple brush-on liquid formula that primes and protects in one step
LONG LASTING PROTECTION - Seals rust to prevent further corrosion, extending metal life by months
CHEMICAL RUST CONVERSION - Transforms flaky rust into a durable, neutral black surface ready for paint
UNIVERSAL METAL COMPATIBILITY - Works seamlessly on iron, steel, grills, pipes, cars & more

Loctite Extend Rust Neutralizer is an 8 oz liquid surface treatment that chemically converts rust on iron and steel into a paintable black primer. Fast-setting in 20 minutes, it creates a tough polymer barrier that stops rust progression and prepares metal surfaces for oil or lacquer-based paint. Ideal for homeowners and pros alike, it revitalizes rusted grills, railings, automotive parts, and more — saving you costly replacements with proven, long-lasting protection.

Specifications

ASIN	B001000VS0
Best Sellers Rank	#9,193 in Automotive ( See Top 100 in Automotive ) #43 in Care Corrosion & Rust Inhibitors #548 in Oils & Fluids
Brand Name	Loctite
Color	Black
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (1,957)
Finish Type	Brushed
Full Cure Time	24 Hours
Global Trade Identification Number	00079340811386
Included Components	Surface Treatment
Item Form	Liquid
Item Type Name	Surface Treatment
Item Volume	8 Fluid Ounces
Item Weight	0.64 Pounds
Manufacturer	Henkel
Model Name	LOCTITE
Model Number	1381192
Part Number	1381192
Size	8 oz
UPC	079340811386

Reviews

J**E

2.05.2014

L**N

26.11.2020

J**R

30.10.2025

I**G

7.12.2025

A**R

24.01.2026

D**Y

9.03.2026

Z**A

15.10.2025

A**R

15.03.2026

A**A

21.10.2019

S**N

15.11.2019

E**L

13.05.2021

S**L

21.04.2023

A**R

11.10.2021

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Loctite Extend Rust Neutralizer

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