Donaldson
Donaldson P178729
- Micron
- 3µm
- Media
- MICROGLASS
- O.D.
- 6"
- I.D.
- 2.63"
- Length
- 17.99"
- Seal
- BUNA
- Efficiency
- 1000
- Collapse
- 100 PSID
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2 verified cross-references — see what replaces this →- Part Number
- P178729
- Manufacturer
- Donaldson
Donaldson P178729 specifications
The Donaldson P178729 is a 3µm microglass filter element. It measures 6" OD x 2.63" ID x 17.99" long. Filtration efficiency is rated at 1000 per ISO 16889. Seals are BUNA, rated for -13°F to 250°F. Collapse pressure rating is 100 PSID. 2 verified cross-references are available from aftermarket manufacturers. Specifications verified. Last reviewed: May 2026
Performance
- Micron Rating
- 3µm
- Media Type
- MICROGLASS
- Efficiency (ISO 16889)
- 1000
- Collapse Rating
- 100 PSID
- Flow Direction
- OUTSIDE-IN
- Operating Temperature
- -13°F to 250°F
Dimensions
- O.D. (inches)
- 6"
- I.D. (inches)
- 2.63"
- O.A.L. (inches)
- 17.99"
- Seal Material
- BUNA
What replaces the Donaldson P178729?
2 verified cross-references on file. A cross-reference confirms dimensional fit and micron rating — not performance equivalence. Beta ratio, collapse rating, media, and service life can differ between brands.
| Part Number | Manufacturer | Match |
|---|---|---|
| HP101L18-3MB | Hy-Pro | Verified |
| SF0101-18-3UM | Swift Filters | Sourced |
Application & Compatibility
The DONALDSON P178729 is designed for use in hydraulic and lubrication filtration systems. With a 3µm rating, this element is suitable for servo valve protection and high-precision hydraulic systems. BUNA seals provide compatibility with standard petroleum-based fluids and mineral oils.
The 100 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 P178729?
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What seal material does the Donaldson P178729 use?
Is there a cross-reference for the Donaldson P178729?
What is the collapse pressure rating of the Donaldson P178729?
What is the operating temperature range for the Donaldson P178729?
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