Double Cartridge Seal SPW-515 – Durable Industrial Mechanical Seal
Double Cartridge Seal SPW-515 – Durable Industrial Mechanical Seal
Overview
HydroMax Seal SPW-515 | Double Cartridge Stationary Seal with Quench & Flush Ports
The SPW-515 is a multi-spring, hydraulically balanced double cartridge stationary seal featuring barrier fluid quench and drain ports along with O-ring secondary seals.
This Stationary Pusher Wet (SPW) Double Cartridge Seal is designed with shrink-fitted seal faces and is suitable for use with parallel rotating equipment shafts.
Engineered with multi-springs for uniform face loading, the SPW-515 includes a set screw drive, flush connection, and quench and drain ports for integration with seal support systems. Its cartridge configuration ensures accurate face load settings and easy installation.
The seal is factory assembled and tested, offering reliable performance in demanding industrial applications.
Product Description
Design Features
- Stationary seal with self-aligning seal faces to handle angular misalignment between the seal chamber face and shaft
- Large 3/8″ NPT port connections
- Pre-set cartridge seal design eliminates the risk of incorrect face load setting
- Includes Quench, Drain, and Flush ports as standard
- Offered in a wide variety of seal face material combinations to suit diverse applications
Technical Specifications
| Seal Shaft Sizes | 20mm – 150mm (1.000″ – 6.000″) |
| 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 | Up to 290.1 psig (process fluid) 16 barg (232 psig) barrier fluid – Shaft Size Specific |
| Pipework & Fittings | Plan 52 and Plan 53 |
| 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 SPW-515 Double Cartridge Seal is a hydraulically balanced, multi-spring double-cartridge mechanical seal engineered for demanding parallel-shaft rotating equipment. Its dual-seal configuration with integrated quench, flush, and drain ports supports a wide range of seal-support fluid plans, providing enhanced lubrication, cooling, and protection of seal faces in services where stable operation and minimal leakage are essential.
Industries Served
Chemical processing and petrochemical plants
Refining and hydrocarbon transfer systems
Power generation utilities and auxiliary systems
Water and wastewater treatment facilities
General industrial pumping and rotating equipment
Equipment & Use-Case Scenarios
- Parallel-shaft centrifugal and process pumps requiring dynamic dual-seal arrangements
- Services with fluctuating pressure and temperature, where balanced seal faces improve stability
- Installations that benefit from controlled flush or quench fluid flow to maintain clean, cool seal faces
- Situations where cartridge-style seals reduce installation time and minimise assembly errors
Why It Fits These Applications
- Balanced, multi-spring construction delivers even load distribution across seal faces under variable operating conditions, improving wear resistance and reliability.
- Quench, flush, and drain provisions support connection to external seal-support fluid plans, enhancing temperature control and face lubrication.
- Double-seal design enhances process media containment and helps reduce leakage in critical service environments.
- Cartridge assembly simplifies installation and replacement while reducing the risk of misalignment or installation error compared with traditional component seals.
Installation Guidelines
Surface Preparation
Before installation, ensure the pump shaft, seal chamber bore, and gland face are clean, smooth, and free of corrosion, scoring, or debris to promote reliable sealing and seal face alignment.
Cartridge Insertion
Carefully insert the SPW-515 cartridge into the seal chamber or gland. Confirm the correct orientation of the quench, flush, and drain ports per your external support-fluid piping plan.
Support-Fluid Setup
Connect quench, flush, and any barrier or buffer lines as required by your support-fluid plan. Prime and vent lines to eliminate trapped air before starting the machine.
Start-Up Procedure
Begin with support-fluid circulation, verify stable flow and pressure, then bring the equipment up under controlled conditions while monitoring seal-face temperature, vibration, and leakage before progressing to full duty.
Maintenance & Inspection Best Practices
- Support-Fluid Monitoring: Routinely check the flow rate, pressure, and temperature of the quench, flush, and barrier loops. Changes can signal restrictions, contamination, or early wear.
- Scheduled Inspections: During maintenance intervals, inspect seal faces, springs, secondary seals, and gland components for wear, abrasion, or deposits, and replace components as needed.
- Operational Tracking: Maintain detailed logs of operating conditions — fluid type, pressure, temperature, shaft speed, and any anomalies — to support trend analysis and predictive maintenance planning.
- Replace Consumables Proactively: Refresh O-rings, gaskets, and support-fluid filters at preventive intervals to maintain optimal seal performance and extend service life.
- Service Condition Changes: If process parameters change (elevated speed, higher temperature, or more aggressive fluids), reassess face materials, elastomer compatibility, and support-fluid plans to ensure continued reliability.
Service & Support Options
- Application Review: Confirm material and support-fluid selections based on fluid chemistry, temperature, and pressure to optimize performance.
- Spare Parts Availability: Stock replacement seal faces, secondary seals, springs, and cartridge hardware to minimise downtime during maintenance.
- Installation Assistance: Technical support for proper alignment and monitored commissioning ensures correct first-run performance.
- Preventive-Maintenance Planning: Establish periodic inspection and replacement schedules based on operational history to maximise service life and reduce unexpected failures.
- Upgrade Guidance: If application demands increase, evaluate alternate materials or enhanced seal configurations suited to the new conditions.
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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
