The choice of gland packing material affects the operating costs of centrifugal pumps, but little is known about the relationship.

　　The acronym "STAMPS" can be used to remember key considerations that can determine which gland packing material and construction should be selected:

　　S Size – What are the stuffing box dimensions?

　　T Temperature – What is the temperature of the medium?

　　A Application – What type of equipment is it?

　　M Media – What medium is being sealed?

　　P Pressure – What is the internal pressure being sealed?

　　S Shaft speed – What is the surface speed of the shaft?

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