Product Discription
TB1, TB1F and TB2 ready-fitted mechanical seals are designed for the seal chamber of the standard
gland packing casing cover and for the standard shaft without extra shaft sleeve, for different
pump types like AHLSTAR process pump range types A, APP, NPP, WPP.
· The ready-fitted seals are designed as an organic part of certain centrifugal pump types
without any extra components to get as much space between the seal and casing cover as possible
for maximizing reliable operation.
· The ready-fitted seals are fixed to the casing cover with a standard flange of the pump or with the
flange of the seal.
· The seal is fixed on the shaft without extra components such as shaft sleeve to get optimal material
wall thickness for highly reliable operation.
· The ready-fitted seals are simple and robust for fast and easy installation and maintenance. They do
not need any complicated setting clips like cartridge seals do.
· The single seal has been designed so that any pressure variations or dropouts of the pumped liquid
do not open the seal faces.
· The double seal has been designed so that any pressure variations or dropouts either on the side of
the pumped liquid or sealing liquid do not open the seal faces. The seal faces do not open in the case
of vacuum pressure, either.
· The double seal is intended for use especially in closed circulation sealing liquid systems. The seal
has a structure that pumps sealing liquid, so a separate circulation pump for sealing liquid is not needed.
· The seal faces lie on the flexible O-rings so that they do not stand at an angle but are aligned accurately
according to the shaft, giving a long and reliable operation time.
· Due to the simple design of the ready-fitted seal, the cost of the seal is much lower than the cost of
cartridge mechanical seals.
