ISO 10438-2:2003 specifies requirements for oil systems supplying oil to compressors requiring seal oil, and to other machines, in special-purpose applications for use in the petroleum, petrochemical and natural gas industries. It is intended to be used in conjunction with ISO 10438-1. ISO 10438 in its entirety specifies requirements for lubrication systems, oil-type shaft-sealing systems, self-acting gas seal systems, control-oil systems and other auxiliaries for general- or special-purpose applications. These systems can serve equipment such as compressors, gears, pumps and drivers.
None of the parts of ISO 10438 is applicable to internal combustion engines.