Loctite Extend Rust Neutralizer – Water-Based Rust Converter

Product Name

Loctite Extend Rust Neutralizer (LOCTITE SF 754), 8 oz Bottle

Brief Description

Loctite Extend Rust Neutralizer is a water-based, milky white to light brown latex coating that converts light surface rust on iron and steel into a stable, paintable black surface. It stops active oxidation, protects the metal, and serves as a primer for a finish coat, without sanding rust down to bare metal first.

Popular Applications & Uses

• Pre-paint treatment for rusted railings, gates, fencing, and structural steel.
• Restoration of grills, patio furniture, lawn equipment, and mailboxes.
• Maintenance of pipes, valves, tanks, and ductwork exposed to moisture.
• Automotive body panels, frames, and undercarriage rust spot repair prior to painting.
• Tool, bicycle, and antique restoration where surface rust needs to be neutralized before refinishing.

Industries that Commonly Use It

• Automotive Service/Repair: Body and undercarriage rust spot treatment before refinishing.
• Marine: Treating rust on deck hardware, trailers, and steel fittings exposed to salt air.
• Metal Fabrication: Prepping welded or formed steel assemblies for paint after fabrication.
• General Manufacturing: Maintenance of rusted equipment, guarding, and structural steel.
• Construction/ Building Services: Rehabbing rusted railings, stairs, and exposed structural steel.
• Prosumer: DIY home, auto, and outdoor equipment rust repair.
• Industrial Supply: Stocked as a standard MRO item for facility and equipment upkeep.
• Distributers & Resellers: Widely distributed through hardware, industrial, and auto-parts channels.

Special and Unique Features

• No Sanding to Bare Metal: Converts adherent surface rust chemically instead of requiring full mechanical removal.
• Dual Function: Acts as both a rust converter and a primer for the finish coat.
• Water-Based, Low VOC: 110 g/L VOC content, water-based vinyl acrylic copolymer formula.
• Ready to Use: No mixing required; apply directly from the bottle by brush, sponge, or airless spray.
• Fast Recoat: Recoats in 15 to 30 minutes; a full cure is reached in 24 hours before topcoating.

Key Properties

• Chemistry: Water-based vinyl acrylic copolymer (synthetic latex resin).
• Appearance: Milky white to light brown liquid.
• Specific Gravity: 1.2 at 73°F (23°C).
• VOC Content: 110 g/L.
• Application Method: Brush, sponge, or airless spray.
• Recoat Time: 15 to 30 minutes between coats; two coats maximum.
• Dry Time Before Topcoat: 24 hours minimum.
• Heat Resistance: Continuous to 200°F (93°C); short exposure to 250°F (121°C).

Known backups / known substitutes

• Rust-Oleum Rust Reformer
• Corroseal Water-Based Rust Converter
• Permatex Rust Treatment
• VHT Rust Convertor
• POR-15 Rust Preventive Coating (different chemistry: oil-modified urethane, not a water-based latex converter)

Comparison Note

• Loctite Naval Jelly Rust Dissolver: A phosphoric-acid gel that dissolves rust down to bare metal and must be rinsed off; it is a rust remover, not a converter, and is a different Loctite product sold separately from Extend.
• Larger Loctite SF 754 Sizes: The same Extend formula is also sold in 1-quart and 1-gallon bottles for larger jobs; this listing is the 8 oz retail size.