RPW-032 – Single Coil Spring for Mechanical Seals
RPW-032 – Single Coil Spring for Mechanical Seals
Overview
HydroMax Seal RPW-032 | Bi-Directional Single Coil Spring Seal with O-Ring
The RPW-032 is a versatile single coil spring mechanical seal designed with bi-directional capability for internal wet applications. It features a shrink-fitted rotary head, parallel shaft configuration, and O-ring sealing. The seal is set screw driven and supplied in standard working lengths for easy installation and reliable performance.
Ideal for general-purpose applications, the RPW-032 supports operation in both rotational directions and is suited for moderate pressures and speeds.
Product Description
Design Features
- Bi-directional single spring design
- Shrink-fitted rotary head for secure shaft engagement
- Parallel shaft compatibility with O-ring sealing
- Set screw drive ensures positive rotary transmission
- Suitable for internal wet applications across various industries
Technical Specifications
| Seal Shaft Sizes | 1.000″ – 4.000″ (12mm – 100mm) |
| Inboard Seal Face Combination | Car/TC Car/SiC |
| Elastomers | Viton ERP |
| Shaft Speeds | Up to 10 m/s |
| Pressures | Up to 8 Barg (116 psig) – Shaft Size Specific |
HydroMax Seal RPW-032 offers dependable, bi-directional sealing for rotating equipment in clean or moderately abrasive process conditions.
Typical Applications & Industry Use Cases
The RPW-032 Single Coil Spring Mechanical Seal is a basic internal wet seal designed for parallel-shaft rotating equipment. Featuring a single helical coil spring and elastomeric secondary seals, this seal provides dependable performance in general industrial fluid services. The set-screw drive ensures positive mechanical engagement, making it suitable for applications requiring simple, reliable sealing without complex support systems.
Industries Served
Water and wastewater treatment
Chemical and petrochemical processing
Industrial process pumping
HVAC and building services
Agricultural and irrigation systems
General manufacturing and fluid transfer
Equipment & Use-Case Scenarios
- Parallel-shaft centrifugal and process pumps require straightforward internal sealing
- Services with clean to moderately contaminated fluids
- Low to moderate pressure and temperature process applications
- Routine maintenance and replacement in standard pumping systems
Why It Fits These Applications
- Single coil spring design: Maintains consistent radial load to keep seal faces engaged
- Elastomeric secondary seals: Provide reliable sealing against the shaft and housing surfaces
- Set-screw drive: Offers secure mechanical engagement and easy installation
- Internal wet configuration: Uses the process fluid for lubrication and cooling
- Straightforward construction: Well-suited for cost-effective general industrial services
Installation Guidelines
Pre-Installation Preparation
Clean and inspect the pump shaft, seal chamber bore, and gland surfaces. Remove corrosion, debris, and surface irregularities to ensure proper sealing-surface contact and alignment.
Seal Installation
Slide the RPW-032 seal onto the shaft into the seal chamber. Ensure the coil spring and elastomer components are properly positioned relative to the shaft and housing. Tighten the set screws evenly to secure the seal without over-torquing.
Orientation Check
Confirm the seal’s orientation matches the direction of shaft rotation and fluid flow where relevant.
System Readiness
Verify that the seal chamber is flooded with process fluid if required, and that all components are securely in place before starting the equipment.
Maintenance & Inspection Best Practices
- Routine Visual Checks: Periodically inspect the seal area for leakage, vibration, or abnormal temperature
- Seal Face Condition: During scheduled maintenance, check seal faces for wear, scoring, or deposits
- Secondary Seal Care: Inspect elastomeric O-rings and replace them if hardened, cracked, or deformed
- Operating Logs: Track pressure, temperature, and shaft speed to support predictive maintenance
- Spare Parts Inventory: Keep replacement springs, secondary seals, and seal faces available to minimise downtime
Service & Support Options
- Application Review: Verify elastomer material compatibility and seal selection based on fluid chemistry and operating conditions
- Installation Assistance: Technical guidance to help ensure correct orientation and secure engagement
- Preventive Maintenance Scheduling: Establish regular inspection and replacement intervals based on service history
- Seal Upgrade Evaluation: If your operating environment becomes more demanding, evaluate alternate designs or materials for improved performance
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
