HydroMax Seal RPW-115 – Durable Mechanical Seal for Pumps
HydroMax Seal RPW-115 – Durable Mechanical Seal for Pumps
Overview
Balanced Multi-Spring Single Cartridge Rotary Pusher Seal with Flush Port
The RPW-115 from HydroMax Seal is a balanced, multi-spring single-cartridge seal designed for parallel shaft applications. This rotary wet pusher seal features shrink-fit seal faces and O-ring secondary seals, offering a dependable sealing solution for a wide range of rotating equipment.
Equipped with a flush port connection, the RPW-115 is set screw driven and comes factory assembled and pressure tested, ensuring fast installation, minimal adjustment, and reliable performance under varied process conditions.
Product Description
Key Design Features
- Balanced pusher seal construction for stable face loading and reduced wear
- Multi-spring design ensures even distribution of axial loads
- Shrink-fitted faces increase structural integrity and thermal resistance
- Flush port connection enables optimal fluid circulation and cooling
- Set screw drive mechanism provides secure and slip-resistant engagement
- Cartridge-style assembly allows for quick, tool-free installation and removal
- Ideal for parallel shaft configurations in general industrial applications
Important: Performance ratings reflect typical limits under isolated conditions. Do not apply maximum speed, pressure, and temperature values simultaneously without expert consultation.
The RPW-115 is a reliable and compact sealing solution within the HydroMax Seal product line, offering dependable operation and ease of maintenance for light to moderate industrial sealing applications.
Typical Applications & Industry Use Cases
The RPW-115 is a hydraulically balanced single-cartridge rotary pusher seal designed for general industrial rotating equipment that requires reliability, ease of installation, and moderate-duty performance. Its compact cartridge format, multi–spring support outside the process fluid, and provision for flush, quench, and drain ports make it an economical yet dependable sealing solution.
Industries Served
Process manufacturing
- pumps and auxiliary systems with moderate duty requirements.
Chemical plants
light to moderate service where sealing of clean or lightly contaminated fluids is required.
Water & wastewater
booster pumps, treatment equipment, and service pumps requiring cartridge seals with flushing/drain support.
OEM rotating equipment
systems where minimised downtime and simplified cartridge installation are valued.
Equipment & Use-Case Scenarios
- Single‐shaft centrifugal pumps with shaft diameters in the small to medium range (e.g., ~20–100 mm) that require a compact single seal solution.
- Systems with flush, quench, or drain provisions (Plan 11/21/31 configurations) where the seal must adapt to varying support-system layouts.
- Retrofits of older equipment where ease of seal replacement and limited gland space are constraints.
- Moderate-speed, pressure applications (for instance, up to ~290 psig and ~20 m/s shaft surface speed), where balanced face loading improves wear life.
Why It Fits These Applications
- The hydraulically balanced pusher seal design reduces face loading, improving wear life and stability under variable pressure and speed conditions.
- Multi-spring arrangement outside the process fluid enhances reliability by keeping the spring assembly cleaner and less exposed to contamination.
- Integrated flush/quench/drain port capability ensures the seal can be configured to match the plant’s support system (flush or open drain) without major adaptation.
- The cartridge design simplifies installation and replacement, reducing maintenance downtime—an important factor in industrial plant environments.
Installation Guidelines
Ensure the pump shaft and seal chamber/bore are clean, true, and within tolerance prior to installation. Remove any scoring, pitting, or debris that could affect face alignment.
Slide the cartridge seal carefully into the gland or onto the shaft without forcing the assembly; ensure the set-screw drive is securely engaged per the manufacturer’s specifications.
Connect and orient the flush, quench, and drain ports according to the selected support-system plan (open-drain or flushed) and ensure the piping is clean, leak-free, and supported.
Before startup, confirm that the operating conditions—shaft speed, pressure, temperature, and fluid characteristics—are within the RPW-115’s rated limits. Record a baseline for face temperature, flush/quench flow, and seal chamber conditions.
Restart equipment under controlled conditions while monitoring seal-face temperature, flush flow, and chamber pressure to validate correct installation.
Maintenance & Inspection Best Practices
- Regularly monitor the flush/quench or drain system: ensure the flow rate remains consistent, there are no blockages, and there is no significant temperature rise. Deviations may indicate seal-face wear or contamination.
- At scheduled shutdowns, inspect, if possible: remove the cartridge, examine seal faces for wear, examine springs for condition, examine O-rings/gaskets for integrity, and examine the chamber for contamination.
- Maintain a log of operating conditions, including shaft speed variations, fluid contamination/solids content, flush/drain system performance, and any abnormal events, such as start-stop cycles or vibration.
- Replace secondary seals (O-rings, gaskets) as part of preventive maintenance rather than reactive replacement—this improves service life and reduces unplanned downtime.
- If process conditions change (higher speed, higher pressure, more abrasive fluid, higher temperature), reassess whether the RPW-115 remains the optimal sealing solution or whether a higher-duty model should be considered.
Service & Support Options
- Pre-installation technical review available to confirm the correct face materials (e.g., Carbon/TC, Carbon/SiC, TC/TC), elastomer selection (Viton, Aflas, Kalrez), and the appropriate flush/quench plan.
- On-site or remote assistance offered during commissioning to validate flush or quench connections, monitor seal-face temperatures, and ensure correct setup under actual operating conditions.
- Spare parts kits are available, including seal faces, springs, O-rings/gaskets, set-screw drives, and screws—these simplify maintenance turnaround and reduce downtime.
- Upgrade pathways offered: if service severity increases (e.g., higher speed, pressure, contamination), the RPW-115 can be replaced with a higher-duty model or an enhanced material option.
- Preventive maintenance programmes available to track performance, log trends, and optimise mean time between maintenance interventions—reducing total lifecycle cost and improving reliability.
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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
