M74D is a double-end mechanical seal with a back-to-back arrangement, multiple small springs, an unbalanced design, and bi-directional rotation. The drive sleeve transmits torque to the rotating components and provides reliable power transmission during operation.
The compact back-to-back configuration makes the M74D suitable for pumps and other rotating equipment that require a double-end sealing arrangement. Its multiple small springs help maintain an even load on the sealing faces during operation.
Key Features
- Double-end mechanical seal design.
- Back-to-back arrangement.
- Multiple small springs.
- Unbalanced construction.
- Bi-directional rotation.
- Drive sleeve torque transmission.
- Compact sealing arrangement.
- Suitable for a wide range of industrial pumps and rotating equipment.
Applications
The M74D mechanical seal mainly serves chemical centrifugal pumps, water pumps, vacuum pumps, axially split case pumps, double suction pumps, blowers, compressors, and paper-making equipment.
Typical applications include:
- Chemical processing
- Petroleum refining
- Petrochemical production
- Sewage treatment
- Pesticide production
- Chemical fertilizer production
- Paper making
Pump Replacement Applications
The M74D can serve as a replacement for equivalent original mechanical seal units used in KSB, Kaiquan, and similar pump models.
It is also available as an alternative to the EagleBurgmann M74D mechanical seal.








