Hydraulic Filtration
Pure.Line
The Pure.Line Filter Elements for hydraulic applications are convincing across the board.
Optimum fluid management is the key to high machine availability. With the products from the Pure.Line, Hengst offers a wide range of hydraulic Filter Elements for every need. The Filter Elements with Pure.Power and Pure.Function ensure that your system runs even under the most difficult conditions - for reliable protection of your systems. Technically differentiated, functionally sophisticated and uncompromisingly reliable - ideal for a wide range of maintenance and service concepts.
Pure sustainability
With the latest technology, intelligent use of materials and resource-saving design, Hengst Filtration pursues a clear claim: maximum efficiency with the greatest possible environmental responsibility. No over-engineering, no waste of materials - just customized performance, precisely tailored to your application.
Pure efficiency
We have the most economical solution for every requirement: Our Filter Elements with maximum dirt holding capacity over a very long period of time ensure low TCO and low downtimes. We also offer Filter Elements for applications with fixed maintenance cycles or specified replacement intervals. This allows maintenance and operating costs to be sustainably reduced.
Pure variety
The Pure.line offers economically optimized solutions and meets the highest requirements for oil cleanliness. These innovative Filter Elements cover a wide range of applications for hydraulic systems and lubricating oil applications - powerful, flexible and always precisely tailored to your system.

Benefits
Pure.Line – Your customer benefits at a glance:
Tailor-made performance for every application
For different maintenance and service concepts
Reliable protection for maximum machine availability
Very high dirt-holding capacity for maximum service life with Pure.Power
Optimum performance for defined change intervals with Pure.Function
Product variants

Pure.Power
Filter elements with Pure.Power are your key to long-lasting machine availability, outstanding system cleanliness, and sustainable cost-effectiveness. Developed for demanding high-performance applications, they stand for maximum efficiency and absolute reliability—even under the most extreme conditions.
With an exceptionally high dirt holding capacity, they enable a very long service life. This reduces maintenance costs. Filter elements with Pure.Power are equipped with an electrically conductive fleece as standard. Ideal for anyone who does not want to compromise on efficiency, performance, and protection.

Pure.Function
The safe solution for defined replacement intervals – Whether for mobile use or industrial applications, filter elements with Pure.Function are suitable for all applications where maintenance is carried out at fixed intervals or a specific replacement interval is specified.
They combine high separation efficiency with efficient dirt holding capacity – especially at minimal differential pressure. This reduces maintenance and operating costs in the long term. Filter elements with Pure.Function deliver exactly what modern and reliable hydraulic systems need: high oil purity and consistent filtration performance.
Characteristic values
Characteristic values | Pure.Power | Pure.Function |
Filter fineness DIN24550 | 10 µm | 10 µm |
Filtration performance ISO16889 | ß10 > 200 | ß10 > 200 |
Dirt holding capacity ISO16889 | +++ | + |
Differential pressure ISO3968 | + | ++ |
Filter medium | 3x glass fiber (single layer) | 1x glass fiber (duo layer) |
Antistatic | ++ | - |
HFC | +++ | + |
Service life* | ≥ 6 months | Maintenance interval |
Pulsation stability | ++ | +++ |
+ good / ++ very good / +++ excellent
*The filter service life depends on various influencing factors and may vary