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Designed for continuous operation in metals manufacturing environments, SESCO lube oil purification systems remove water, metal fines, gases, and oxidation byproducts that compromise hydraulic and lubrication performance. Excelling in high water contaminant environments our equipment stabilizes system pressure and extends equipment life across high-load applications. SESCO purification systems support:
• Rolling mill hydraulic and lubrication systems
• Gearboxes and circulating oil systems
• Compressors, blowers, and pumps
• Turbines and generators
SESCO systems dependability protects servo valves, bearings, and high-precision components while reducing the risk of failures that interrupt production.

The SES300 purifiers are high-efficiency vacuum distillation systems. Compared to the typical “mass transfer” vacuum dehydrator the SES300 will remove 5X-10X the amount of water contamination per pass.
Built on more than 80 years of proven engineering from our Bowser Inc. heritage, every SESCO system is configured to match real-world plant conditions.
We work directly with maintenance and reliability teams to deliver solutions that improve uptime, lower lifecycle cost, and protect critical assets in demanding steel and aluminum environments.
Achieve consistent performance in the toughest conditions with field-validated systems built for high moisture removal, heavy-duty degasification, long duty cycles, and site-specific configurations.
- Operations Manager, Utility Company
- Operations Manager, Electric Utility
- Manager, Transformer Diagnostics and Maintenance Services
- Operations Manager, Transformer Manufacturer
- Operations Manager, Oil Processing Services Company
- Operations Manager, Transformer Service Company

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When high-voltage infrastructure meets rising electricity demand, failure is not an option. SESCO delivers power transmission oil purification systems built for consistent performance, long service life, and real-world operating conditions. Backed by more than 80 years of engineering expertise rooted in Bowser Inc., our systems provide:
• Precision vacuum dehydration
• Effective degasification
• Advanced insulating oil conditioning
Each system is optimized for transformers, substations, and distribution assets where reliability matters most.
SESCO goes beyond standard equipment. We provide solutions designed around your exact operating needs—before, during, and long after installation. What you get:
• Custom-configured oil purification systems
• Fast expert troubleshooting to minimize downtime
• Lifetime support from our dedicated service center
• Hands-on training to quickly upskill your teams
• Seamless integration with ZTZ Services for continuous oil monitoring
The result: smarter maintenance, longer asset life, and a stronger return on investment.
We excel at turning your specifications into proven solutions. Systems can be installed on a wide range of mobile and stationary platforms to match your operational needs. Each SESCO system reflects decades of experience supporting field teams to extend transformer life, maintain performance, and reduce operational risk.


SESCO delivers a clear reliability advantage with oil purification systems engineered for continuous operation in demanding plant environments. Our systems support stable generation, protect critical assets, and help keep units online longer.
Built on more than 80 years of proven engineering from our Bowser Inc. legacy, SESCO equipment is designed specifically for power generation applications. Each system is optimized for generator step-up transformers and balance-of-plant oil-filled assets. The result is extended transformer life, reduced failure risk, and improved plant availability.
SESCO delivers more than standard equipment. We work directly with plant engineers and maintenance teams to match system design to operating requirements. You get:
• Fully custom-configured oil purification systems
• Rapid expert troubleshooting to reduce downtime
• Lifetime support from our dedicated service center
• Hands-on training to quickly upskill plant personnel
• Integration with ZTZ Services for continuous oil condition monitoring
Our approach supports predictive maintenance, lowers total lifecycle cost, and improves return on capital investments.
We excel at turning your specifications into proven solutions. Systems can be installed on a wide range of mobile and stationary platforms to match your operational needs. Each SESCO system reflects decades of experience supporting field teams to extend transformer life, maintain performance, and reduce operational risk.


SESCO delivers proven oil purification systems for power distribution that perform reliably in real-world conditions. Our solutions support network stability, extend asset life, and reduce replacement costs across distributed systems. SESCO offers both mobile and stationary systems designed specifically for distribution applications. Our systems provide:
• Vacuum dehydration to remove moisture
• Degasification to reduce dissolved gases
• Fine filtration to remove particulates
• Optional oil regeneration for extended service life Equipment is optimized for pole-mounted, pad-mounted, and substation distribution transformers.
The result is improved transformer reliability across your fleet.
SESCO supports the entire power chain, but we specialize in helping power distribution networks maintain uninterrupted service. With SESCO you gain:
• Rapid expert troubleshooting to minimize downtime
• Custom-configured systems matched to your operating constraints
• Lifetime support from our dedicated service center
•.Practical training to build confident maintenance teams
• Integration with ZTZ Services for real-time oil condition monitoring
This approach enables condition-based maintenance, reduces unnecessary oil processing, and improves return on investment.
We excel at turning your specifications into proven solutions. Systems can be installed on a wide range of mobile and stationary platforms to match your operational needs. Each SESCO system reflects decades of experience supporting field teams to extend transformer life, maintain performance, and reduce operational risk.


SESCO delivers a clear reliability advantage with oil purification systems engineered for continuous operation in refinery and petrochemical environments. Designed for seamless integration, delivering continuous offline purification that stabilizes performance and keeps critical assets online longer. Our equipment protects:
• Turbines
• Generators
• Process compressors
• High-load pumps
• Hydraulic systems
By delivering consistent contamination control without interrupting operations, SESCO helps maintain equipment reliability and support uninterrupted plant performance.

The SES300 purifiers are high-efficiency vacuum distillation systems. Compared to the typical “mass transfer” vacuum dehydrator the SES300 will remove 5X-10X the amount of water contamination per pass.
Each SESCO system is optimized for turbine oils, compressor oils, hydraulic fluids, and balance-of-plant assets to extend oil life and reduce contamination risk. SESCO works directly with refinery engineers and maintenance teams to match system design to operating requirements. You get:
• Fully custom-configured oil purification systems
• Rapid expert troubleshooting to minimize downtime
• Lifetime service and technical support
• Hands-on training for plant personnel
• Integration with ZTZ Services for continuous oil condition monitoring
Our suite of services and equipment for the petroleum industry supports predictive maintenance and lowers lifecycle cost while protecting critical rotating equipment.
- Operations Manager, Utility Company
- Operations Manager, Electric Utility
- Manager, Transformer Diagnostics and Maintenance Services
- Operations Manager, Transformer Manufacturer
- Operations Manager, Oil Processing Services Company
- Operations Manager, Transformer Service Company
