Hilsorb Dryer Cartridge
HILCO PD Series
Moisture and Particulate Removal for Critical Oil Systems
HILCO Hilsorb Dryer Cartridges quickly and effectively remove water and solid contaminants from hydraulic, lube, insulating, and fuel oils. Combining high-efficiency particulate filtration with high-capacity water absorption, Hilsorb cartridges help maintain fluid quality, protect equipment, and extend fluid life.
HILCO Hilsorb cartridges provide an effective solution for applications where moisture control and filtration efficiency are critical to reliable system operation.

HILCO Hilsorb Dryer Cartridge Key Features:
Simultaneous Moisture and Particulate Removal
Removes free water and solid contaminants within a single cartridge design to help maintain fluid cleanliness and system reliability.
Patented Four-Ply Construction
Engineered multi-layer media combines water absorption and particulate filtration while providing excellent dirt-holding capacity.
Water Saturation Indication Through Differential Pressure
As absorbed moisture fills the media, pressure drop increases, providing a clear indication that cartridge replacement is required.
Compatible with Multiple Oil Types
Suitable for use in insulating oils, hydraulic oils, lube oils, transformer oil, insulating oil, and fuel oils across a wide range of industrial applications.
HOW IT WORKS
Protecting Oil Systems from Water Contamination
Water contamination can enter oil systems through condensation, equipment maintenance, reservoir breathing, and environmental exposure. Even small amounts of moisture can accelerate fluid degradation, reduce lubrication effectiveness, lower dielectric strength, and contribute to corrosion and premature component wear.

By Removing Water and Particulate Contamination, HILCO Hilsorb Dryer Cartridges Help Deliver:
Extended Fluid Life
Helps preserve critical fluid properties and slow degradation
Improved Equipment Protection
Reduces corrosion, wear, and moisture-related damage
Improved System Reliability
supports consistent operation of hydraulic, lubrication, insulating oil, and fuel systems
Reduced Maintenance Costs
Minimizes contamination-related service requirements and fluid replacement frequency
HILCO Hilsorb Dryer Cartridges combine super-absorbent media with fine particulate filtration to remove both water and solid contaminants from the fluid stream. As fluid passes through the cartridge, moisture is absorbed and retained within the media while particulate contamination is captured throughout the filter structure. This dual-action process allows the oil dehydration cartridge to continuously condition fluid and maintain cleaner, drier systems.
Industries
Supporting Critical Fluid Management Application
HILCO Hilsorb Dryer Cartridges are used in systems where moisture contamination can negatively impact fluid performance, equipment reliability, and operating efficiency. The hydraulic oil dryer cartridge is particularly suited for hydraulic systems where water contamination can contribute to corrosion, reduced lubricity, and component wear.
WHY HILLIARD
Why Companies Choose HILCO Hilsorb Dryer Cartridges
Simultaneous Water and Particulate Removal
Hilsorb Dryer cartridges are designed to remove both water and solid contamination from industrial oils within a single filtration element.
Four-Ply Filtration Construction
The PD cartridge uses a four-ply construction engineered to capture particulate contamination while removing water from the fluid stream.
Designed for Critical Industrial Oils
Hilsorb Dryer cartridges support water and contamination control in hydraulic, lubrication, and insulating oils where fluid condition directly affects system operation.
Multiple Filtration Efficiency Options
Available in two efficiency ratings, allowing the Hilsorb Dryer cartridge to be selected around application-specific fluid cleanliness requirements.
Browse Categories
Products Supporting Critical Industrial Applications
Founded in 1905, Hilliard has grown from a one-product business into a global manufacturer serving customers across motion control

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Application-Specific Filtration for Industrial Fluid Systems
Contamination Control
Fluid Cleanliness
Equipment Protection
