Donaldson offers a wide range of hydraulic filters specifically designed to perform across a broad array of hydraulic applications. Donaldson standard filters incorporate technology engineered to consistently meet or exceed required specifications and your performance expectations. To ensure the best fit for your equipment, many filters provide a choice between standard or high-performance alternatives.  

You can choose the filter that is right for your application based on your specific fluid characteristics and efficiency requirements.

Versatile Application Ranges

Donaldson provides specialized filtration solutions categorized by system pressure and flow rate to ensure maximum component protection.

Low-Pressure Filters

Low-pressure filters are the most common type of filter found in hydraulic circuits and are primarily used in return line applications.

  • Pressure Ratings: Donaldson low-pressure filters are rated for working pressures up to 20 bar / 350 psi.
  • Configurations: Both in-tank and in-line configurations are available to accommodate virtually any application.

Medium-Pressure Filters

Medium-pressure filters are typically positioned between pumps and critical system components like cylinders, motors, and valves. These filters protect against catastrophic system failure. 

  • Design Styles: Donaldson offers both spin-on and inline cartridge style options.
  • Donaldson Duramax®: These are the highest-rated medium-pressure filters available, recognized for being proven, reliable, long-lived, and easy to install.
  • Media Standards: All Duramax® filters feature exclusive Synteq media, with the exception of the FLK line, which comes standard with Synteq XP™ media, with a higher grade.

High-Pressure Filters

High-pressure filters are positioned between pumps and critical system components with a unique  design that withstands the extreme pressures of the most heavy-duty applications

  • Pressure Ratings: Heavy-duty, high-pressure filters from Donaldson are rated for working pressures of 130–450 bar / 1885–6527 psi.
  • Advanced Media: All high-pressure options feature exclusive Synteq™ or DT Synteq™ media.

Industry-Leading Media Technology

Donaldson's proprietary media is engineered to handle diverse fluid types and demanding environments.

Media Type

Key Benefits & Fluid Compatibility

Synteq™

Provides low resistance to fluid flow; ideal for synthetic fluids, water glycols, water/oil emulsions, HWCF, and petroleum-based fluids.

DT Synteq™

High-performance grades providing the best available chemical resistance for hydraulic applications.

DT Grades

Specifically ideal for use with phosphate ester and water glycol fluids.