Hydac
The Hydac 4.01.18D20P is a 20µm paper / cellulose hydraulic filter element. It measures 3.78" OD x 1.73" ID x 18.5" long. Seals are Nitrile (Buna-N), rated for -13°F to 250°F. 1 verified cross-reference is available from aftermarket manufacturers.
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Technical specifications for the Hydac 4.01.18D20P filter element. Data sourced from manufacturer catalogs and verified against OEM documentation.
| Specification | Value |
|---|---|
| Micron Rating | 20µm |
| Media Type | Paper / Cellulose |
| O.D. (inches) | 3.78" |
| O.A.L. (inches) | 18.5" |
| I.D. (inches) | 1.73" |
| Seal Material | Nitrile (Buna-N) |
| Flow Direction | Pressure Line (Outside-In) |
| Operating Temperature | -13°F to 250°F |
Last verified: February 2026
1 verified cross-reference available from Hy-Pro. All cross-references are reviewed for dimensional and performance compatibility.
| Manufacturer | Part Number | Confidence |
|---|---|---|
| Hy-Pro | Request part number | Verified |
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Last verified: February 2026
The HYDAC 4.01.18D20P is designed for use in hydraulic and lubrication filtration systems. With a 20µm rating, this element is suitable for pump and component protection in industrial hydraulic circuits. Nitrile (Buna-N) seals provide compatibility with standard petroleum-based fluids and mineral oils.
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