The difference between Do-type seal, FO-type seal and FT-type seal

Do-type
Do-type floating oil seal is used for coal mining. It is a combination of two floating seal rings and two O-type rubber seal rings. It is a floating oil seal with circular cross section of rubber seal ring. The floating seal ring is mainly used for liquid sealing, therefore, during the operation of the equipment, the floating seal ring (floating ring for kerosene sealing) floats under the action of oil film pressure (this is the reason for the floating seal ring), thus overcoming the easy wear of the fixed device. Phenomenon, this design greatly reduces the sealing clearance, can correspondingly reduce and simplify the capacity of the sealing oil pump, reduce the recovery and treatment of waste oil, is one of the most ideal sealing devices on coal mine machinery and equipment.

FO-type
The most common mechanical face seal design of the FO-type, also known as the “O” ring design, in which the “O” ring is used as a secondary sealing element. The Type FO mechanical face seal consists of 2 identical metal seal rings that seal against each other on overlapping sealing faces.

FT-type
The FT-type mechanical face seal consists of two metal angle seal rings with the same geometric profile. The seal rings are assembled with trapezoidal or rhombic elastomers instead of “O” ring elastomers. The two metal sealing rings are sealed against each other on overlapping sealing surfaces.

Mechanical face seals are mainly used as seals for bearings in construction machinery, as seals for tractor axles, as seals for treads in excavators, as seals for shafts in crop harvesters, as seals for screw conveyors in abrasives and equipment, and as seals for equipment operating in extremely harsh and hostile environments. Extreme conditions, easy to wear. Therefore, it needs to be checked and replaced regularly.

The difference between Do-type seal, FO-type seal and FT-type seal

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Post time: Sep-03-2024