Hy-Pro
The Hy-Pro HP21L4-2MB is a 5µm dualglass hydraulic filter element. It measures 1.78" OD x 1.05" ID x 4" long. Filtration efficiency is rated at β4000 per ISO 16889. Seals are Nitrile (Buna-N), rated for -45°F to 225°F. Collapse pressure rating is 3000 PSID. 51 verified cross-references are available from aftermarket manufacturers.
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Technical specifications for the Hy-Pro HP21L4-2MB filter element. Data sourced from manufacturer catalogs and verified against OEM documentation.
| Specification | Value |
|---|---|
| Performance | |
| Series | High Pressure In-Line Filter Element (High Collapse) |
| Media Type | Dualglass |
| Micron Rating | 5µm |
| Max Operating Pressure | 4000 psi (275 bar) |
| Collapse Rating | 3000 PSID |
| Efficiency (ISO 16889) | β4000 |
| Operating Temperature | -45°F to 225°F |
| Dimensions | |
| Seal Material | Nitrile (Buna-N) |
| O.D. (inches) | 1.78" |
| I.D. (inches) | 1.05" |
| O.A.L. (inches) | 4" |
| Additional | |
| Filter Type | Cartridge Element |
| Element Length | 4" (102 mm) |
| Beta Ratio | β5[C] ≥ 4000 |
| Max Temperature | 225°F (107°C) |
Last verified: February 2026
51 verified replacements available from Baldwin, Denison, Diagnetics, EPE, Filtersoft and 17 more
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The HY-PRO HP21L4-2MB is designed for use in hydraulic and lubrication filtration systems. With a 5µm rating, this element is suitable for servo valve protection and high-precision hydraulic systems. Nitrile (Buna-N) seals provide compatibility with standard petroleum-based fluids and mineral oils.
The 3000 PSID collapse rating indicates the maximum differential pressure this element can withstand during cold starts or bypass conditions without structural failure. Ensure your system's maximum differential pressure does not exceed this rating.
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