Parker
The Parker 943977Q is a 20µm microglass hydraulic filter element. It measures 7.95" OD x 0.56" ID x 21.46" long. Filtration efficiency is rated at β200 ≥ 20 per ISO 16889. Seals are BUNA, rated for -13°F to 250°F. Collapse pressure rating is 145 PSID. 1 verified cross-reference is available from aftermarket manufacturers.
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Technical specifications for the Parker 943977Q filter element. Data sourced from manufacturer catalogs and verified against OEM documentation.
| Specification | Value |
|---|---|
| Micron Rating | 20µm |
| Media Type | MICROGLASS |
| Efficiency (ISO 16889) | β200 ≥ 20 |
| O.D. (inches) | 7.95" |
| I.D. (inches) | 0.56" |
| O.A.L. (inches) | 21.46" |
| Collapse Rating | 145 PSID |
| Seal Material | BUNA |
| Flow Direction | INSIDE-OUT |
| 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 PARKER 943977Q 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. BUNA seals provide compatibility with standard petroleum-based fluids and mineral oils.
The 145 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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