Technology Made in Germany

Selection Criteria for Choosing the right packing

Stuffing box design

To avoid extrusion, the gap between shaft and housing, or between shaft and packing gland, should not exceed 2 % of the packing size for higher pressure valve applications and 5 % of packing size for lower pressure pump applications

Standard Construction:

d = Pump shaft / Valve stem size
D = Stuffing box bore
T = Stuffing box depth
Sp = Gap width
Rz = Surface roughness Shaft 1 to 5 µm
Housing 6-16 µm

Relation of Heat conductivity of different Pump packings