General This standard covers the minimum dry gas sealing system requirements in association with axial@ centrifugal@ and rotary screw compressors and expanders for use in the petroleum@ chemical@ and gas industry services as described in API 617 and API 619. API 692 does not apply to other types of shaft seals such as clearance seals@ restrictive ring seals@ or oil seals. Part 1??General Requirements This part of API 692 contains information pertinent to all equipment covered by the other parts of API 692. It shall be used in conjunction with the following parts of API 692 as applicable. ?? Part 2??Dry Gas Seals. ?? Part 3??Dry Gas Seal Support Systems. ?? Part 4??Installation and Commissioning.