Rust Converter is Sierra's acid treatment that turns rust on iron and steel into paintable iron phosphate, in sizes from 1 L up to a 20 L drum.

What it does

Rust is iron oxide. Sierra's converter turns that oxide into iron phosphate, a stable layer that can take paint. It is acid based: the SDS lists orthophosphoric acid at over 40 per cent and describes it as clear and colourless with no odour, pH about 1, specific gravity 1.38. Sierra designs it to be diluted before use.

Where to use it

Rusted iron and steel that will be painted afterwards. To keep rust off bare metal in the first place, Sierra's Lanomax Liquid Lanolin leaves a protective film. More in the rust and corrosion protection range.

How to use

1. Wear overalls, chemical goggles under a face shield, impervious gloves up to the elbow, a splash apron and rubber boots.
2. Dilute before use. Sierra does not publish the rate in the material we hold, so ask us for it before you start.
3. Mix and decant only in corrosion resistant containers with a resistant liner.
4. Apply to the rusted area and let the rust convert to iron phosphate.
5. Paint over the treated surface once it has converted.

Safe on / avoid

Made for iron and steel. Keep it off alloys, natural rubber, leather and glass, which the SDS lists as incompatible along with strong caustics, and never store it in metal containers, as it releases flammable hydrogen on contact with metals. Protect it from freezing. Read the Safety Data Sheet before use.

Specifications

Pack sizes and delivery

1L (sold in lots of 12), 5L Jerry Can (lots of 4), 20L Drum, and the Bulk tier (16+ drums) for orders of 16 or more 20 L drums. Freight is quoted to your postcode at checkout. Dangerous goods freight applies.