Single Cartridge Seal RPW-215 – High-Performance Mechanical Seal
Single Cartridge Seal RPW-215 – High-Performance Mechanical Seal
Overview
HydroMax Seal RPW-215 | Balanced Single Cartridge Stationary Seal with Flush and Quench Ports
The RPW-215 is a multi-spring, hydraulically balanced single-cartridge stationary seal featuring flush and buffer fluid quench & drain (Plan 62) ports, along with O-ring secondary seals.
This Rotary Pusher Wet (RPW) Single Cartridge Seal is equipped with shrink-fitted seal faces and is designed for use with parallel rotating equipment shafts.
The seal incorporates several advanced design features, including multi-springs for uniform face loading, set screw drive for secure shaft engagement, and an outboard floating restriction bush. It comes standard with quench, drain, and flush connections and is engineered for compatibility with Plan 62 piping systems.
The RPW-215 is factory assembled and tested to ensure reliable performance in demanding applications.
Product Description
Design Features
- Rotary seal configuration
- Large 3/8″ NPT port connections
- Cartridge seal design for simplified installation and pre-set face load
- Standard with Quench, Drain, and Flush ports
- Wide selection of seal face materials for broad application suitability
Technical Specifications
| Seal Shaft Sizes | 20mm – 150mm (1.000″ – 6.000″) |
| Inboard Seal Face Combination | Car / TC Car / SiC TC / TC TC / SiC SiC / SiC |
| Outboard Seal Face Combination | Car / TC Car / SiC |
| Gasket | GFT |
| Elastomers | Viton, ERP, Aflas, Kalrez |
| Shaft Speeds | Up to 20 m/s |
| Pressures | Up to 290.1 psig (process fluid) |
| Pipework & Fittings | Plan 11, Plan 32, Plan 62 |
| Temperatures | Up to 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 RPW-215 Single Cartridge Mechanical Seal is a multi-spring, hydraulically balanced cartridge seal designed for parallel-shaft rotating equipment. It incorporates flush, quench, and drain ports for connection to support-fluid plans such as Plan 62, along with O-ring secondary sealing. The design includes shrink-fitted seal faces and an outboard floating restriction bush, and is factory-assembled and tested to ensure consistent, reliable sealing performance.
Industries Served
Chemical and petrochemical processing
Water and wastewater treatment
Industrial pumping and fluid transfer
Food and beverage processing
Power generation and utility services
General manufacturing and OEM applications
Equipment & Use-Case Scenarios
- Single-seal cartridge installations on centrifugal and process pumps
- Applications where controlled flush, quench, and drain fluid circulation improves lubrication and heat dissipation
- Services operating under moderate pressures, temperatures, and shaft speeds
- Installations where reduced installation time and lower risk of assembly errors are important
Why It Fits These Applications
- Multi-spring balanced design: Ensures uniform seal face loading, improving stability and extending seal life
- Hydraulically balanced cartridge: Reduces face stress and enhances performance across changing operating conditions
- Flush, quench, and drain ports: Enable effective fluid management and environmental control
- Outboard floating restriction bush: Helps regulate pressure and protect secondary sealing components
- O-ring secondary seals: Provide reliable dynamic sealing and shaft accommodation
- Shrink-fitted seal faces: Improve dimensional stability and resistance to thermal distortion
- Factory-assembled cartridge: Simplifies installation and reduces maintenance downtime
Installation Guidelines
Pre-Installation Preparation
Clean and thoroughly inspect the pump shaft, seal chamber bore, and gland surfaces. Remove corrosion, debris, or surface irregularities to ensure accurate alignment and proper sealing surface contact.
Cartridge Installation
Insert the RPW-215 cartridge seal into the seal housing. Ensure correct orientation of flush, quench, and drain ports according to the selected support-fluid plan. Secure the cartridge evenly to the recommended torque values.
Alignment & Fit
Verify that the stationary seat and seal faces are properly aligned within the seal chamber to maintain uniform face contact during operation.
Startup Procedure
Initiate flush and quench fluid circulation before starting the equipment. Gradually bring the pump to operating speed and pressure while monitoring seal performance for leakage, vibration, or abnormal temperature rise.
Maintenance & Inspection Best Practices
- Routine Visual Checks: Inspect the seal area during operation for leakage, vibration, or unusual heat
- Seal Face Inspection: During scheduled shutdowns, check faces for wear, scoring, or deposits
- Restriction Bush Monitoring: Inspect restriction bush components for wear or blockage
- Operational Records: Log pressure, temperature, and speed data to support predictive maintenance
- Spare Parts Readiness: Maintain replacement secondary seals, faces, and bushings to reduce downtime
Service & Support Options
- Application Review: Confirm seal materials and configuration match fluid chemistry and operating conditions
- Installation Support: Technical guidance to ensure correct setup and reliable initial operation
- Preventive Maintenance Planning: Establish inspection and replacement schedules based on service severity
- Upgrade Evaluation: Consider enhanced materials or alternative seal designs if operating demands increase
Related Products
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
