Pall HC7500SDT8Z Replacement Filter Element — Cross-Reference & Specifications
Hydrafil Part Number: BF-PAL-184361-L8-25MV | Ships same day from Detroit, MI | OEM-equivalent performance
The Pall HC7500SDT8Z combines the high-flow capacity of the long-body (L8) HC7500 housing with Viton (fluorocarbon) seals — the right specification for large industrial HPUs running phosphate ester fluids, fire-resistant hydraulic oils, or environments where sustained operating temperatures above 225°F make standard Buna-N seals unsuitable. At 25µm with Viton seals, this is the general-purpose long-body element for chemically demanding, high-flow systems: die-casting machine hydraulics, steel mill equipment specified for fire-resistant fluid, and industrial presses operating under elevated thermal loads where both the broad 25µm filtration range and chemical-resistant elastomers are required together. The 10.9 in body length ensures sufficient flow capacity without excessive pressure drop in applications where both fluid chemistry and flow volume would otherwise limit element selection.
Dimensional Specifications
Verify the long-body (L8) housing before ordering — the SDT8Z is dimensionally distinct from the short-body SDT4Z; confirm housing compatibility to ensure proper seating and seal engagement.
| Specification | Value |
|---|---|
| Outer Diameter (Top) | 5.06 in |
| Outer Diameter (Bottom) | 5.06 in |
| Element Length | 10.9 in |
| Thread Size | 1.5 - 16 |
| Collapse Rating | 100 psid |
Media & Construction
The BF-PAL-184361-L8-25MV matches the Pall OEM long-body SDT8Z specification — microglass media with Viton seals for applications where both high-efficiency filtration and fluid/temperature compatibility beyond Buna-N’s limits are required.
- Filtration Media: Microglass Fiber Media — delivers higher dirt-holding capacity and better multi-pass efficiency than cellulose at 25µm, critical for maintaining long service intervals in high-flow industrial systems
- Seal Material: Viton (Fluorocarbon) — rated for phosphate ester (HFD-R, Skydrol-type) fluids, fire-resistant hydraulic oils, and sustained temperatures to 400°F; mandatory when Buna-N would swell, degrade, or dissolve on contact with the system fluid
- End Caps: Corrosion Resistant Steel — maintains dimensional stability across the temperature range Viton seals are selected for
- Center Tube: Corrosion Resistant Steel — supports the media pack at the full 100 psid rated collapse pressure, preventing bypass failure under cold-start pressure spikes
Filtration Performance Rating
The 25µm microglass rating with Beta 200/1000 values reflects genuine ISO 16889 multi-pass performance — not a nominal rating achieved only in ideal conditions. For high-flow industrial circuits where 25µm is the selected filtration level and the system fluid demands Viton compatibility, this combination of verified Beta performance and chemical-resistant seals eliminates the compromise between filtration effectiveness and elastomer integrity.
The SDT8Z’s 25µm Viton long-body configuration is the OEM specification for high-flow HPUs running chemically aggressive or high-temperature fluids — delivering the same general-purpose filtration performance as the Buna-N SDT8H while adding the chemical and thermal resistance that demanding applications require.
| Rating | Value |
|---|---|
| Beta Ratio (Bx) | 200 |
| Beta Ratio Bx[c] | 1000 |
ISO Standards Compliance
Manufactured to the full suite of ISO hydraulic filter standards for documented OEM-equivalent performance.
| ISO Standard | What It Tests |
|---|---|
| ISO 2941 | Collapse & burst resistance |
| ISO 2942 | Fabrication integrity & bypass valve function |
| ISO 2943 | Material compatibility with hydraulic fluids |
| ISO 3724 | Flow fatigue characteristics |
| ISO 3968 | Pressure drop vs. flow rate characteristics |
| ISO 16889 | Multi-pass performance (Beta ratio methodology) |
About the Pall HC7500SDT8Z
The HC7500SDT8Z is specified for large industrial hydraulic systems where fire-resistant or high-temperature fluid chemistry rules out Buna-N seals, and where flow demands exceed the capacity of the short-body L4 housing. It is most commonly encountered in steel mill and foundry hydraulics running phosphate ester fire-resistant fluid, die-casting machine HPUs with sustained high oil temperatures, and large-format industrial presses operating in environments where fire-resistant fluid is a facility or insurance requirement. The Viton seal grade combined with the long-body form factor makes this the standard maintenance replacement for the most thermally and chemically demanding HC7500 long-body applications.
Why Order from Hydrafil?
- OEM-equivalent performance at a lower cost per element
- Manufactured and sourced in the USA — Detroit, Michigan facility
- Same-day shipping on in-stock elements
- 200,000+ filter cross-references available
- Technical support: +1 (313) 915-4120
Shop the BF-PAL-184361-L8-25MV
Questions? Call (313) 915-4120 or email sales@hydrafil.com
Pall and HC7500SDT8Z are trademarks of their respective owners, referenced here solely for cross-reference and compatibility identification purposes.