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WEDOLiT K 721 is an anti-corrosive protective medium of low viscosity for steel. It contains an inhibitor
combination attuned to affording temporary protection from corrosion. When the solvent has evaporated a
thin film of oil impervious to age forms on the treated surface which grants protection under covered
storage facilities for several months and even allows a short period of exposure to weather in the open
when, for example, goods are being transported from one factory location to another. This film can be
easily removed even after a long period with the aid of organic solvents or water-soluble industrial
detergents. As complete anti-corrosion protection however is not afforded until the solvent-free film has
formed, a period of storage lasting some 24 hours should be observed for evaporation before packaging
the freshly oiled material in cases with oiled paper or foil inserts.
WEDOLiT K 721 is adjusted to give temporary corrosion protection to bright-drawn steel. In addition it is
also suitable for the after-treatment of phosphatised parts to the extent that these are immersed in the oil
free of water.
WEDOLiT K 721 meets, after the evaporation of the solvent, all the requirements demanded by VDA 230-
WEDOLiT K 721 is the preferred medium for immersion baths in treating hollow bodies (pipe and tube, for
example) at ambient temperatures because of its low viscosity. It can also be applied by spraying, flow
coating or by means of rollers.
WEDOLiT K 721 contains a solvent based mineral oil for adjusting viscosity with a flash point above 60°C.