Donaldson
Donaldson P566277
Industrial filter element
Donaldson P566277 specifications
The Donaldson P566277 is a 20µm microglass filter element. It measures 3.85" OD x 1.61" ID x 18.75" long. Filtration efficiency is rated at 1000 per ISO 16889. Seals are VITON, rated for -13°F to 250°F. Collapse pressure rating is 145 PSID. 7 verified cross-references are available from aftermarket manufacturers. Specifications verified. Last reviewed: May 2026
Physical fit
- Outer Diameter (O.D.)
- 3.85"OEM-published
- Inner Diameter (I.D.)
- 1.61"OEM-published
- Overall Length
- 18.75"OEM-published
- Micron Rating
- 20µmOEM-published
- Seal Material
- VITONOEM-published
- Connection / Thread
- Not yet verified from an OEM source
Performance: Donaldson published values
These are Donaldson's own published numbers. Performance specs differ by brand and are never inherited across cross-references.
- Efficiency (ISO 16889)
- 1000
- Media Type
- MICROGLASS
- Collapse Rating
- 145 PSID
- Flow Direction
- OUTSIDE-IN
- Operating Temperature
- -13°F to 250°F
About the Donaldson P566277
HYDRAULIC FILTER, CARTRIDGE DT
What replaces the Donaldson P566277?
7 published cross-references on file. Select to expand.
What replaces the Donaldson P566277?
7 published cross-references on file. Select to expand.
A cross-reference confirms dimensional fit and micron rating, not performance equivalence. Beta ratio, collapse rating, media, and service life can differ between brands.
Published cross-references
| Part Number | Manufacturer | Match |
|---|---|---|
| HPKL18-25MV | Hy-Pro | Verified |
| BEK1825A | — | Verified |
| DE4051B5C20 | Denison | Verified |
| 1HF42H20SLA000V | — | Verified |
| P97100JFB | — | Verified |
| V4051V6C20 | Vickers | Verified |
| SF9700-18-25UMV | Swift Filters | Sourced |
Application & Compatibility
The DONALDSON P566277 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. VITON seals provide compatibility with petroleum-based fluids, synthetic fluids, phosphate esters, and water-glycol mixtures.
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.
Frequently Asked Questions
What micron rating is the Donaldson P566277?
What are the dimensions of the Donaldson P566277?
What seal material does the Donaldson P566277 use?
Is there a cross-reference for the Donaldson P566277?
What is the collapse pressure rating of the Donaldson P566277?
What is the operating temperature range for the Donaldson P566277?
How this entry is verified
Every specification on this page names its source: manufacturer documents first, distributor catalogs second, decoded part-number patterns labeled as such. When a value has not been verified from an OEM source, the cell says so. Cross-references are fit claims, never performance claims.
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