Single Mixer Mechanical Seal – EMD-150B
Single Mixer Mechanical Seal – EMD-150B
Overview
HydroMax Seal EMD-150B | Single Dry Cartridge Seal with Integral Bearing
The EMD-150B is a multi-spring, single dry cartridge seal with an integral bearing.
This Stainless Steel External Single Dry Seal Cartridge Assembly features a monolithic rotary seal face and a shrink-fitted, clamped stainless steel stationary, along with a gland plate and bearing housing.
The seal has a number of design features, comes factory assembled and tested, and has been successfully installed in hundreds of applications.
Product Description
Technical Specifications
| Seal Shaft Sizes | 0.79″ – 5.91″ (further sizes can be designed as required) |
| Inboard Seal Face Combinations | Car/TC |
| Gasket | GFT |
| Elastomers | Viton ERP Aflas Kalrez |
| Shaft Speeds | Up to 10 m/s |
| Pressures | Up to 6 barg (90 psig) |
| Temperatures | 30 – 180°C (86 – 356°F) |
WARNING:
The safe seal performance characteristics are typical values for each variable in isolation. The individual upper limit values of speed, pressure, and temperature should NOT be used in combination.
Typical Applications & Industry Use Cases
The EMD-150B Single Mixer Mechanical Seal is a multi-spring, single dry-cartridge seal with an integral bearing, engineered for mixer and agitator shaft sealing. It features a stainless-steel external cartridge assembly with a monolithic rotary face, clamped stationary components, and an integrated bearing housing — delivering reliable, long-life sealing performance in dynamic mixing environments.
Industries Served
Chemical and process mixers handling a wide range of fluid chemistries
Pharmaceutical and biotech blending vessels
Food and beverage mixing and blending systems
Water treatment and effluent mixing operations
General industrial mixers requiring stable sealing under moderate operating conditions
Equipment & Use-Case Scenarios
- Top-entry and side-entry agitators, where shaft speed, torque, and vibration challenge conventional seal designs
- Mixer systems operating with moderate viscosities and operating pressures
- Applications where integrated bearing support improves shaft stability and reduces seal wear
- Processes requiring a dry-running cartridge seal without the complexity of external barrier or buffer fluid systems
Why It Fits These Applications
- Cartridge construction simplifies installation and reduces the risk of assembly error.
- Integral bearing design enhances shaft stability under dynamic mixer loads and vibration.
- Multi-spring configuration ensures consistent, uniform face loading during operation
- Suitable for a broad range of mixer shaft sizes, with flexibility for custom configurations
- Designed to operate reliably at moderate shaft speeds and pressures common in industrial mixing applications
Installation Guidelines
Prepare all mating surfaces
Ensure the mixer shaft, seal chamber bore, and bearing housing surfaces are clean, smooth, and free of corrosion, burrs, or debris prior to installation.
Mount the cartridge assembly
Carefully slide the EMD-150B onto the shaft, ensuring the integral bearing seats are correctly aligned, and the rotary and stationary seal faces are properly aligned.
Secure the seal
Tighten set-screws or clamps evenly to secure the cartridge without distorting springs or elastomer components.
Initial run-in
Start the mixer at low speed and observe operation for leakage, vibration, or abnormal noise before ramping up to full operating conditions.
Maintenance & Inspection Best Practices
- Routine visual inspections: During scheduled maintenance, inspect seal faces, elastomer components, and bearing condition for signs of wear or degradation.
- Monitor operating behavior: Watch for increased leakage, a rise in temperature at the seal area, or changes in vibration — all may indicate early seal wear or misalignment.
- Maintain operational records: Log mixer speed, fluid properties, temperature, and duty cycles to support predictive maintenance planning.
- Proactive component replacement: Replace worn seal faces, O-rings, or elastomer parts before failure to prevent unplanned downtime.
- Bearing health checks: Since the seal incorporates an integral bearing, verify smooth rotation and absence of axial or radial play as part of routine service.
Service & Support Options
- Application review: Confirm that fluid chemistry, operating speed, pressure, and temperature are within the seal’s design limits to ensure optimal service life.
- Spare parts planning: Maintain inventory of replacement seal faces, secondary seals, and bearing components to minimize maintenance delays.
- Installation support: Technical assistance during installation helps ensure proper alignment, seating, and initial performance.
- Preventive maintenance programs: Scheduled inspections and condition-based maintenance help extend seal service life and reduce the total cost of ownership.
- Upgrade guidance: If operating conditions become more severe—such as higher speeds, aggressive fluids, or elevated temperatures—alternative seal designs or material upgrades can be evaluated.
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Contact HydroMax Seal
Contact HydroMax Seal today for innovative solutions, expert guidance, and over a century of engineering excellence. Your journey to mechanical sealing excellence starts with HydroMax Seal!
E-Mail: sales@hydromaxseal.com
Address: 18511 Beaumont Hwy Building D
Houston, TX
77049
