Durable Single Coil Spring – RPW-041
Durable Single Coil Spring – RPW-041
Overview
HydroMax Seal RPW-041 | Single Coil Spring Seal for Alfa Laval ALC2 Pumps
The RPW-041 is a single-coil spring mechanical seal designed for use with Alfa Laval ALC2 pump models. This internal wet seal features a monolithic rotary head, unbalanced O-ring sealing, and a shrink-fitted stationary seat, delivering reliable performance for hygienic and light-duty industrial applications.
With a compact and efficient design, the RPW-041 is built to ensure smooth operation at moderate pressures and shaft speeds in clean process environments.
Product Description
Design Features
- Specifically engineered for Alfa Laval ALC2 pump models
- Monolithic rotary head for durability and thermal resistance
- Unbalanced O-ring seal design for effective sealing under moderate conditions
- Shrink-fitted stationary face for secure alignment
- Ideal for food, beverage, and sanitary fluid processes
Technical Specifications
| Seal Shaft Size | 1.65″ |
| Inboard Seal Face Combinations | Car/TC Car/SiC |
| Elastomers | Viton ERP |
| Shaft Speeds | Up to 10 m/s |
| Pressures | Up to 5 Barg (72 psig) – Shaft Size Specific |
HydroMax Seal provides OEM-compatible sealing solutions designed to meet the operational needs of specialty pumps in critical hygienic applications.
Typical Applications & Industry Use Cases
The RPW-041 Single Coil Spring Mechanical Seal is a unidirectional, single-spring internal wet seal designed for parallel-shaft rotating equipment. Featuring a single helical coil spring and an elastomeric secondary seal, this seal is suitable for standard-duty applications requiring dependable, basic mechanical sealing performance. The rotary element is shrink-fitted with a set-screw drive for secure assembly and reliable torque transfer.
Industries Served
Chemical processing
Water and wastewater treatment
General industrial pumping and rotating equipment
Oil and gas fluid transfer systems
Utilities and power generation applications
Manufacturing and process industries require internal wet seals
Equipment & Use-Case Scenarios
- Parallel-shaft centrifugal and process pumps require a simple mechanical seal.
- Internal wet services where process fluid provides cooling and lubrication
- Systems handling clean to moderately contaminated fluids
- Round-the-shaft OEM seal replacement applications
Why It Fits These Applications
- Single coil spring design: Provides consistent radial loading to maintain contact between seal faces while accommodating minor shaft motion
- Elastomer secondary seals: Offer reliable sealing against the shaft and housing surfaces
- Shrink-fitted rotary head: Ensures secure attachment and reduces the risk of slippage during operation
- Set-screw drive: Simplifies installation, improves torque transfer, and provides positive engagement
- Standard seal dimensions: Allow compatibility with common industrial seal cavities and inventory parts
Installation Guidelines
Pre-Installation Preparation
Thoroughly clean the pump shaft, seal chamber bore, and gland face. Remove corrosion, scoring, and debris to achieve smooth sealing surfaces and proper alignment.
Seal Installation
Carefully slide the RPW-041 seal onto the shaft into the gland or seal chamber. Position the coil spring and elastomer components correctly. Tighten the set screws evenly to secure the seal without excessive torque.
Orientation Check
Confirm that the seal’s unidirectional orientation matches the shaft rotation and fluid flow direction appropriate for service.
System Readiness
Ensure the seal chamber is primed with process fluid if required and that all mechanical connections are secure before startup.
Maintenance & Inspection Best Practices
- Conduct routine checks for visible leakage, abnormal vibration, or elevated temperatures around the seal.
- During scheduled maintenance, inspect seal faces, spring condition, and elastomer components for wear or degradation.
- Replace elastomer secondary seals (O-rings, gaskets) if they become hardened, cracked, or deformed.
- Keep detailed operating logs of pressures, temperatures, fluid properties, and speeds to assist predictive maintenance.
- Maintain spare springs, seal faces, and elastomers to minimize service downtime.
Service & Support Options
- Application reviews to ensure elastomer and material compatibility with process fluids and conditions
- Installation guidance to help ensure correct orientation and reliable first-run performance
- Preventive maintenance planning tailored to operational cycles and duty conditions
- Evaluation of upgraded seal designs if service demands change or increase
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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
