PUMP SOLUTIONS
About Our Pump Solutions
Trusted by Leading Pump OEMs & End Users
For over three decades, SEPL has partnered with pump manufacturers, EPC contractors, and end users to deliver reliable bearing solutions and precision-engineered pump components.
Combining globally proven Thordon bearing technology with in- house engineering, machining, and field support capabilities, we help customers improve equipment reliability, extend service life, and reduce lifecycle costs across a wide range of pumping applications.
Pump Applications
Applications We Serve:
- Circulating / Cooling Water (CW) Pumps
- Auxiliary Cooling Water (ACW) Pumps
- Concrete Volute (CV) / NB Pumps
- Intake / Raw Water Pumps
- Irrigation Pumps
- Flood Control Pumps
- Condensate Extraction (CEP) Pumps
- Fire-Fighting Pumps
- De-watering Pumps
Industries
Proven Across Critical Industries
SEPL's pump solutions are trusted across industries where uptime, reliability, and long service life are essential. From power generation and water treatment facilities to refineries, ports, and large-scale irrigation projects, our solutions are engineered to perform in demanding operating environments.
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Thermal Power Plant
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Nuclear Power Plant
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Captive Power Plant
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Atomic Research Centre
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Drinking Water Pumping Stations
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Water & Sewage Treatment Plants
THORDON IN PUMPS
Where Thordon Works Inside a Pump
Thordon bearing systems can be integrated throughout the pump assembly, providing reliable lubrication-free performance in critical wear locations.
By eliminating conventional bearing materials and reducing dependence on oil or grease lubrication, Thordon helps improve reliability, reduce maintenance requirements, and extend equipment life.
Type of Thordon Pump Bearing Products
- Stuffing Box Bearing
- Line Shaft Bearing
- Bowl Bearing
- Suction Bell Bearing
Thordon In New & Existing Pumps
Thordon bearing systems are equally suited for integration into new pump designs as well as for upgrading existing pumps during overhaul, refurbishment, or retrofit. SEPL works closely with OEMs and end users to ensure correct bearing selection, fitment, and long-term performance across the pump lifecycle.
Thordon in new pumps (OEM Integration)
For new pump designs, Thordon enables engineers to move away from oil- or grease-lubricated bearing systems and adopt water-lubricated solutions with improved reliability and lower operating costs.
Key advantages:
- Greater design flexibility for bearing arrangements
- Optimised clearances for stable hydrodynamic performance
- Lower friction and reduced shaft wear
- Suction Bell BearingsElimination of oil lubrication systems and associated contamination risks
- Longer service intervals and improved mean time between overhauls (MTBO)
Thordon in existing pumps (Retrofit & Conversion)
Thordon bearings can be introduced into existing pumps as a direct replacement for conventional rubber, phenolic, or bronze bearings, with minimal modification to the pump assembly.
Key advantages:
- Retrofit-friendly replacement during routine maintenance or refurbishment
- Minimal machining changes in most applications
- Improved performance under contaminated water conditions
- Capability to handle dry start-up events in suitable grades
- Enhanced reliability and reduced unplanned downtime
SEPL’s role in new & existing pump projects
- Application assessment and bearing grade recommendation
- Dimensional verification and tolerance optimisation
- Manufacturing / supply of Thordon bearings and mating components
- On-site support for installation, alignment and commissioning
Why Thordon For Pumps
Different pump applications demand different bearing materials. Thordon's range of engineered polymer bearings allows designers and operators to optimise performance based on operating conditions, water quality, load requirements, and maintenance objectives.
Grades Of Thordon
Engineered Materials for Every Operating Environment
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Thordon XL
Recommended for: Clean water pump applications
- Elastomeric bearing material with long service life
- Coefficient of friction: 0.2–0.25
- Excellent abrasion resistance under clean operating conditions
- Provides stable performance at moderate loads and speeds
- Commonly used in predictable operating conditions and low contamination levels
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Thordon SXL
Recommended for: Pumps with intermittent operation or dry start conditions
- High-performance elastomeric grade designed for demanding environments
- Working pressure capability up to 10 MPa
- Coefficient of friction typically 0.1–0.2
- Capable of dry start-up and operation in wet or dry conditions
- Highly resistant to abrasion, shock loading, and vibration
- Suitable for applications with variable loads and frequent start-stop cycles
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Thordon GM2401
Recommended for: Highly abrasive pump environments
- Two-component bearing material formulated for severe service conditions
- Significantly stiffer than rubber with at least twice the abrasion resistance
- Lower coefficient of friction compared to conventional rubber bearings
- Suitable for applications involving high solids content and severe abrasives
- Available with polymer or metal backing to suit installation requirements
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ThorPlas-Blue
Recommended for: High-load, high-pressure pump applications
- Engineered thermoplastic bearing material
- Design pressure capability up to 45 MPa
- Coefficient of friction: 0.1–0.17
- Capable of dry start-up with excellent dimensional stability
- Operates in water temperatures up to 80°C and in dry conditions up to 110°C
- Easily machinable without affecting material properties
- Exhibits very low wear rates in non-abrasive environments
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ThorPlas-White
Recommended for: Drinking water and hygienic pump applications
- Engineered thermoplastic bearing material with built-in lubricants
- NSF/ANSI 61 and WRAS approved for potable water applications
- NSF/ANSI 51 certified for food equipment use
- Low coefficient of friction with excellent dry-run capability
- Low wear and long service life in clean fluid environments
- Easily machined and installed, ensuring clean and efficient handling
Material Selection Guide
Selecting the Right Grade for Your Application
| Parameter | SXL | Composite (GM2401) | XL | ThorPlas-Blue | ThorPlas-White | PT80 |
|---|---|---|---|---|---|---|
| Description | Elastomeric Polymer Alloy | Elastomeric Polymer Alloy | Elastomeric Polymer Alloy | Engineered Thermoplastic | Engineered Thermoplastic | Elastomeric Polymer Alloy |
| Temperature Limit | 60°C (140°F) | 60°C (140°F) | 60°C (140°F) | 80°C (176°F) | 80°C (176°F) | 80°C (176°F) |
| Suitable for Dry Start-up | YES* | NO | NO | YES* | YES* | YES* |
| Resistance to Acids | Limited | Limited | Limited | YES | YES | Fair |
| Resistance to Alkalis | Limited | Limited | Limited | YES | YES | Fair |
| Suitable for Hydrocarbons | YES | YES | YES | YES | YES | YES |
| Abrasion Resistance | Very Good | Excellent | Good | Acceptable | Acceptable | Very Good |
| Installation Clearance | Medium to Low | Higher | Medium | Low | Low | Medium to Low |
| Shaft Sleeve Material | Bronze, Stainless Steel | No-CJ (Chromium) | Bronze, Stainless Steel | Stainless Steel (Hard ≥ 300 HB) | Stainless Steel (Soft ≤ 311) | Bronze, Stainless Steel |
| Lubrication | Water, Seawater, Most Fluids (pH 5–10) | Water, Seawater, Most Fluids (pH 5–10) | Water, Seawater, Most Fluids (pH 5–10) | Water, Seawater, Most Fluids (pH 3–11) | Potable Water | Water, Seawater, Most Fluids (pH 3–11) |
| Remarks |
Low friction. Suitable for dry start-up. Good abrasion resistance. |
For use in highly abrasive operating environments. |
Good balance between abrasion resistance and medium level of friction. |
Lowest friction. Good for low abrasion applications. For use at temperatures and in chemical solutions unsuitable for Thordon elastomers. |
NSF International Certification for NSF/ANSI 61 Drinking Water System Components. Accepted Material by CFIA. WRAS Material Approval |
Suitable for higher temperatures. Low friction. Suitable for dry start-up. Good abrasion |
* For dry start-up times longer than 30 seconds, please contact Thordon Engineering for grade selection.
Note: For nuclear use, Quality Control certificates including certified test reports can be supplied.
Functional Spares & Components
Precision Engineered Pump Components
Every component plays a vital role in pump performance and reliability. SEPL designs and manufactures custom-engineered pump spares and metal components that ensure dimensional accuracy, wear resistance, and precise fitment across a wide range of pump applications
Hydraulic Components:
- Open & Closed Impellers
- Bowl
- Bell Mouth
- Impeller Guide Piece
- Wear Ring
Shafting & Rotating Components:
- Shaft
- Sleeve
- Coupling
- Spider
Bearings & Sealing Systems:
- Metal Backed Bearing
- Journal Bearing
- Bearing Housing
- Bearing Holder
- Thrust Bearing Housing
- Stuffing Box
- Split Gland
- Throttle Bush
- Bellow
Structural & Piping Components:
- Column Pipe
- Discharge Head
- Reducer
- Spool Piece
- Sole Plate
- Side Cover
Auxiliary Components:
- Strainer
- Cooling Coil
- Ratchet Mechanism
- Split Ring
Services
Lifecycle Engineering Services
At SEPL, our engagement extends beyond product delivery. We offer a comprehensive range of pump services, delivered on- site and in-house, to ensure reliable operation, optimal performance, and extended service life of critical pump components. Our experienced team combines field expertise with advanced engineering tools to support pump projects from condition assessment through installation and commissioning.
Inspection
Dismantling
Coating
Relining
Refurbishment
Measurement
Maintenance Support
Reverse Engineering
Installation & Commissioning
Balancing
Why SEPL For Pump Solutions?
A Trusted Partner Across the Pump Lifecycle
With decades of industry experience and access to world-class Thordon technologies, SEPL provides dependable pump solutions that improve efficiency, minimise maintenance requirements, and ensure long-term operational reliability.
Highlights:
- 30+ Years Experience
- Exclusive Thordon Partner
- In-House Engineering Expertise
- OEM & End User Expertise
- Engineering-Led Solutions
- Pan-India Service Support
Contact Our Pump Specialists
Let’s Discuss Your Application
Whether you're designing a new pump, upgrading an existing system, or looking for replacement components,
our engineering team can help identify the right solution for your requirements.