API RP 5A3: Recommended Practice on Thread Compounds for Casing, Tubing, Line Pipe

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SDO: API: American Petroleum Institute
This International Standard is based on API RP 5A3, first edition, June 1996.
This International Standard specifies requirements and gives recommendations for the manufacture, testing and selection of thread compounds for use on casing, tubing and line pipe based on the current industry consensus of good engineering practice. It is intended that the words casing and tubing apply to the service application rather than to the diameter of the pipe.
The performance requirements of thread compounds for use with casing, tubing and line pipe include:
_ consistent frictional properties that will allow both proper and uniform connection engagement;
_ adequate lubrication properties to resist galling or damage of connection contact surfaces during make-up andbreak-out;
_ adequate sealing properties for thread type seal connections and/or not inhibiting the sealing properties of non-thread sealing connections (e.g. metal-to-metal seals, polytetrafluoroethylene (PTFE) seals, etc.) depending upon service requirements;
_ physical and chemical stability both in service and in expected compound storage conditions;
_ properties that will allow effective application to the connection contact surfaces in expected service conditions and environment.