Glass and Concrete Mould Oil is a refined mineral oil which helps maintaining a lubricant film at a temperature of hot glass, with minimum carbon deposits. The Oil can be applied either with a swab or by spraying. The Oil is thin concrete form oil recommended for use mainly with metallic moulds but it is also suitable for non-metallic moulds of non-porous nature. The Glass and Concrete Mould Oil has the feature that moulds are not stained or discoloured and therefore, do not need any elaborate clearing treatment before re-use.