This patt of ISO 6743 establishes the detailed classification of lubricants of family P for pneumatic tools and machines driven by compressed air. All the lubricants listed belong to class L (Lubricants, industrial oils and related products). This classification System covers only lubricants which are in contact with the compressed air. Pneumatic tools or machinery may have other Points of lubrication (e.g. internal bearings, gears, etc.) which are not covered by this part of ISO 6743. This classification applies only for normal operational and environmental conditions. If abnormal conditions are encountered, e.g. very high or very low temperatures, the manufacturer of the equipment and/or the supplier of the lubricant should be consulted. This part of ISO 6743 should be read in conjunction with ISO 6743-0.