Donaldson develops, manufactures, and markets a full line of industrial hydraulic filters for the protection of machinery and components in hundreds of applications — in the factory and on heavy duty-mobile equipment. When you need filter housings, filter heads, replacement cartridges, spin-ons (e.g. Donaldson Duramax™) or hydraulic accessories, turn to Donaldson. We’re proud to offer a broad line of upgrade/replacement filter elements with a short delivery time.

donaldson hydraulic filter Hi Press

High Pressure Filters


Donaldson heavy-duty high-pressure filters sit behind pumps and other prime movers to protect critical hydraulic components such as cylinders, motors and valves. All contain our SYNTEQ® synthetic filter media, specially developed by Donaldson for high efficiency liquid filtration. Working pressures range from 2000 psi up to 6090 psi; static pressures from 4500 psi up to 12000 psi.

donaldson hydraulic filter Medium Press

Medium Pressure Filters


HNK DURAMAX® spin-on hydraulic filter is the newest addition to Donaldson’s family of medium pressure filters. The HNK adds a proprietary fit to help you retain the replacement element business. DURAMAX is well-known as the highest rated spin-on style filters available. They are most often used in return-line positions. As spin-ons, they are particularly well-suited for duplex circuits. Available with Donaldson Synteq® and cellulose media. DURAMAX working pressures range from 350 psi up to 1000 psi; static pressures from 800 psi up to 2000 psi.

donaldson hydraulic filter Low Press

Low Pressure Filters

Low pressure filters are the most common type of filter in hydraulic circuits, used as return line filters in applications with typcial working pressures up to 150 psi and static pressure up to 300 psi. Donaldson offers flow/pressure combinations to fit most applications. Continuous filtration of bulk fluids through dedicated off-line circuits or kidney loops helps keep fuel, oil and lubricants clean.