Hy-Pro
Hy-Pro HP21L8-3SFB
- Micron
- 3µm nominal (β-rated, absolute 4µm)
- Media
- Dynafuzz SS Fiber
- O.D.
- 1.735"
- I.D.
- 1.025"
- Length
- 8.18"
- Seal
- Nitrile (Buna-N)
- Efficiency
- β4000
- Collapse
- 3000 PSID
Hy-Pro HP21L8-3SFB is a filter element rated at 4 µm (3 µm nominal), a beta ratio of β ≥ 4000, 3000 psid collapse pressure, and measuring 1.735 in OD, 1.025 in ID, and 8.18 in length. It uses Dynafuzz SS Fiber media and Nitrile (Buna-N) seals, rated for -45 °F to 225 °F (Hy-Pro part number decoder).
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- Part Number
- HP21L8-3SFB
- Manufacturer
- Hy-Pro
Hy-Pro HP21L8-3SFB specifications
The Hy-Pro HP21L8-3SFB is a 3µm nominal (β-rated, absolute 4µm) dynafuzz ss fiber filter element. It measures 1.735" OD x 1.025" ID x 8.18" 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. Specifications verified. Last reviewed: April 2026
Performance
- Series
- High Pressure In-Line Filter Element (High Collapse)
- Media Type
- Dynafuzz SS FiberSS fiber for EHC and aerospace
- Max Operating Pressure
- 4000 psi (275 bar)
- Collapse Rating
- 3000 PSID
- Micron Rating
- 3µm nominal (β-rated, absolute 4µm)
- Efficiency (ISO 16889)
- β4000
- Efficiency
- 99.97%
- Operating Temperature
- -45°F to 225°F
Dimensions
- Seal Material
- Nitrile (Buna-N)
- O.A.L. (inches)
- 8.18"
- O.D. (inches)
- 1.735"
- I.D. (inches)
- 1.025"
Additional
- Filter Type
- Cartridge Element
- Element Length
- 8" (203 mm)
- Beta Ratio
- β4[C] ≥ 4000
- Max Temperature
- 225°F (107°C)
Application & Compatibility
The HY-PRO HP21L8-3SFB is designed for use in hydraulic and lubrication filtration systems. With a 3µm nominal (β-rated, absolute 4µm) rating, this element is suitable for pump and component protection in industrial hydraulic circuits. 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.
Frequently Asked Questions
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What is the operating temperature range for the Hy-Pro HP21L8-3SFB?
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