RPW-500 Double Cartridge Mechanical Seal – High-Performance Design
RPW-500 Double Cartridge Mechanical Seal – High-Performance Design
Overview
HydroMax Seal RPW-500 | Double Cartridge Multi-Spring Balanced Seal with Quench & Drain Ports
The RPW-500 is a hydraulically balanced, double-cartridge mechanical seal designed for parallel-shaft equipment. This rotary pusher wet (RPW) seal features multi-spring loading for even face pressure, shrink-fitted seal faces, and secondary O-ring sealing for reliable containment.
With quench and drain ports for connection to a seal support system, the RPW-500 is ideal for use in critical process environments where enhanced thermal and pressure performance is required. Each seal is factory-assembled and pressure-tested for reliability and easy installation.
Product Description
Design Features
- Double cartridge seal with rotary pusher design
- Hydraulically balanced shrink-fitted faces for stable operation
- Multi-spring loading for even seal face pressure distribution
- Set screw driven for secure shaft attachment
- Barrier fluid quench & drain ports for external seal support system connection
- Supplied factory assembled and tested
Technical Specifications
| Seal Shaft Sizes | 20mm – 100mm (1.000″ – 4.000″) |
| Inboard Seal Face Combinations | Car/TC Car/SiC TC/TC TC/SiC SiC/SiC |
| Outboard Seal Face Combinations | Car/TC Car/SiC |
| Gasket | GFT |
| Elastomers | Viton ERP Aflas Kalrez |
| Shaft Speeds | Up to 20 m/s |
| Pressures | Process Fluid: up to 290.1 psig Barrier Fluid: up to 16 Barg (232 psig) – Shaft Size Specific |
| Temperatures | Up to 356°F |
WARNING:
Seal ratings are based on isolated conditions. Do not combine the maximum limits of speed, pressure, and temperature simultaneously.
Typical Applications & Industry Use Cases
The RPW-500 Double Cartridge Mechanical Seal is a robust double-cartridge seal designed for parallel-shaft rotating equipment that requires reliable, dual-seal protection and improved containment of process fluids. This cartridge seal accommodates a range of industrial services and is engineered to simplify installation while supporting enhanced sealing reliability in demanding applications.
Industries Served
Chemical and petrochemical processing
Water and wastewater treatment
Refining and hydrocarbon transfer systems
Power generation and utility services
General industrial pumping and fluid handling
OEM and heavy industrial applications
Equipment & Use-Case Scenarios
- Dual seal arrangements on centrifugal and process pumps
- Systems where enhanced fluid containment and environmental protection are priorities
- Services with variable pressures and temperatures
- Applications benefiting from simplified cartridge installation and maintenance
Why It Fits These Applications
- Cartridge-style design: Complete seal assembly simplifies installation and reduces alignment errors
- Dual seal configuration: Improves fluid containment and reduces leakage risk in critical services
- Balanced seal faces: Help maintain stable sealing performance across varying operating conditions
- Durable construction: Materials selected to stand up to general industrial environments
- Service-friendly design: Cartridge format enables faster removal and replacement during maintenance
Installation Guidelines
Pre-Installation Preparation
Thoroughly clean and inspect the pump shaft, seal chamber bore, and gland surfaces. Remove corrosion, debris, and surface defects to ensure accurate alignment and reliable sealing-surface contact.
Cartridge Installation
Insert the RPW-500 double cartridge seal into the seal housing. Align the cartridge so that all ports and sealing surfaces are properly interfaced with the equipment’s seal chamber. Secure the cartridge according to the recommended torque specifications.
Alignment & Fit
Verify that the cartridge is fully seated against the gland face and that any drives or locating features are engaged properly to maintain alignment.
Startup Procedure
After installation, bring the pump up to operating speed and pressure gradually. Monitor the seal area for leakage, vibration, or unusual temperature changes before placing the equipment into full duty.
Maintenance & Inspection Best Practices
- Routine Visual Checks: Inspect the seal area for leakage, heat, or vibration during operation
- Seal Face Condition: During scheduled maintenance, examine seal faces for wear, scoring, or buildup
- Operational Logging: Track pressure, temperature, and speed as part of routine performance monitoring
- Spare Parts Planning: Maintain replacement seal faces, secondary seals, and cartridge components to minimise downtime
Service & Support Options
- Application Review: Ensure seal materials and configuration are appropriate for the fluid properties and operating conditions
- Installation Assistance: Technical guidance can help ensure proper setup and first-run performance
- Preventive Maintenance Scheduling: Set regular intervals for inspection and parts replacement based on the duty cycle
- Seal Upgrade Evaluation: If service conditions evolve, consider alternate materials or enhanced designs for improved longevity
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
