Ready-fitted seals

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 body 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.

	TB1	TB1F	TB2P
P _max	25 bar / 362 psi	25 bar / 362 psi	25 bar / 362 psi
V _max	25 m/s / 82 ft/s	25 m/s / 82 ft/s	25 m/s / 82 ft/s
T _max	125°C / 257°F	120°C / 284°F with internal flushing 180°C / 355°F with external flushing	180°C / 355°F
Seal faces	SiC/SiC, C/SiC	SiC/SiC, C/SiC	SiC/SiC-SiC/SiC SiC/SiC-C/SiC
O-rings	EPDM, FKM	EPDM, FKM	EPDM, FKM
Other parts	AISI 316, AISI 329	AISI 316, AISI 329	AISI 316, AISI 329