Rustproofing Oil

Drying oil that penetrates the surface structure of clean or corroded metals and prevents oxidation.

Available in 5 litre and 1 litre containers. Retailers

RUSTPROOFING OIL is 100 % pre-polymerized unsaturated fatty acids of linseed oil. It is non-biodegradable and water-repellent and it resists fats, petroleum products, salts and household acids, e.g. lemon, wine and vinegar. The other constituents of linseed oil do not dry and have been removed. It therefore dries, i.e., hardens, quickly and completely to linoxyn, a natural polymer.. At 20°C / 60°F and with good ventilation, RUSTPROOFING OIL dries in 24 hours or less. Read more on the TECHNOLOGY.

Linseed oil contains substances that react with water: the waxes from the seed coat which create a gel with water, and non-drying fatty acids, which do not dry but go rancid and emulgate with water. Water usually comes in contact with the metal under films of oil and create further corrosion. Traditionally, attempts to solve this problem include linseed oil burning: heating up the workpiece in a forge or with a welding torch until it’s red hot, and then dipping it in linseed oil, whereupon a small explosion occurs and the workpiece turns black.

We have solved this problem by removing all the substances from the linseed oil except for the oxidizing fatty acids, which we boil. The result is an oil from which no living organsisms can extract nourishment, which does not react with water, which dries completely and which penetrates the microstructure of the surface - it turned out to be impossible to scrape off the dried residue of our oil from polished stainless-steel containers. Only long periods of wetting in strong soft soap will dissolve our dried oil.

Dried RUSTPROOFING OIL is an excellent substrate for painting if the residue has been removed from the surface before the oil has dried.

Clean, non-corroded metal surfaces are effectively protected by painting them with Selder & Co’s linseed-oil paints. They consist of 45% binder with the same composition and properties as RUSTPROOFING OIL. Selder & Co’s linseed-oil paints permanently attach to the oil-treated surface and never peel off. They can be easily maintained every 10-30 years, the time dependent on the amount of UV radition that dissolve the binder (refined linseed oil).

Download the Product Data Sheet (PDF format) here: RUSTPROOFING OIL


Remove loose rust, paint residue, fats etc. with a pressure washer. Tough-to-remove surface rust needs not be removed. Make sure the surface is fully dry before treating it.

Clean, non-corroded metal surfaces to be painted do not need to be treated with ROSTSKYDDSOLJA if painted with Selder & Co’s linseed-oil paints, as these consist of 45% vol. binder with the same composition and properties as ROSTSKYDDSOLJA.

Apply ROSTSKYDDSOLJA liberally with a brush or spray gun on a dry surface where the temperature of the surrounding air us kept at over 5°C / 41°F. The hotter the oil and/or the metal is (up to 130°C / 266°F), the more efficient the oil is at penetrating pores and nooks and crannies. WARNING: at temperatures above 180°C / 356°F, the oil exudes a white steam with a stinging odor.

Wash brushes and tools used with strong soft soap, e.g. STRONG SOFT SOAP.

If you intend to paint the corrosion-protected surface: after 20-30 minutes (1-2 hours if the oil is cold), thoroughly remove any leftover oil from the surface. Leftover oil creates a sticky skin. If that happens, gently use a card scraper to remove the skin and then polish with RUSTPROOFING OIL.

Give time to oxidate for at least 24 hours before painting. Provide good heating and ventilation. The oil dries by oxidation and the time needed to dry is dependent on two factors: the supply of oxygen and the temperature. The oil can dry to the touch in a few hours’ time on a windy, hot summer day, whereas it can take up to a week in a cool, poorly ventilated garage.


No respiratory protection necessary. Provide good ventilation, especially when working with oil heated to 130⁰C / 266⁰ F. The oil is a poor heat conductor and does not cause burns if spilled, but be aware that metal objects that have been in contact with warm oil burns.


Cloths and other porous materials moistened with linseed oil must be soaked in water before disposal. Oil-treated surfaces do not ignite on their own. The danger concerns only fibrous materials.

Metal objects that have been in warm oil burns.