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Material Selection
The proper selection of packing, gasket or seal materials is dependent on the operating conditions of the equipment. Six parameters of the equipment must be determined before a proper packing recommendation can be made. The acronym “STAMPS” is commonly used to designate these parameters:
S = Size — cross section or gasket dimensions
T = Temperature — of media being sealed
A = Application — type of equipment (i.e., pumps, valves, mixers, etc.)
M = Media — material being sealed
P = Pressure — of media being sealed
S = Speed — shaft speed in fpm (pumps only)

