Kaydon

Kaydon KF4509-8

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Dimensional schematic

Micron: 12µm
Media: Dualglass
O.D.: 4.39"
I.D.: 3.3"
Length: 8.96"
Seal: Nitrile (Buna-N)
Efficiency: β1000

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Part Number: KF4509-8
Manufacturer: Kaydon

Kaydon KF4509-8 specifications

The Kaydon KF4509-8 is a 12µm dualglass filter element. It measures 4.39" OD x 3.3" ID x 8.96" long. Filtration efficiency is rated at β1000 per ISO 16889. Seals are Nitrile (Buna-N). 1 verified cross-reference is available from aftermarket manufacturers. Specifications verified. Last reviewed: March 2026

Performance

Micron Rating: 12µm
Media Type: Dualglass
Efficiency (ISO 16889): β1000

Dimensions

O.A.L. (inches): 8.96"
O.D. (inches): 4.39"
I.D. (inches): 3.3"
Seal Material: Nitrile (Buna-N)

What replaces the Kaydon KF4509-8?

1 verified cross-reference 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
HP4509L9-12MB	Hy-Pro	Verified

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Application & Compatibility

The KAYDON KF4509-8 is designed for use in hydraulic and lubrication filtration systems. With a 12µm rating, this element is suitable for proportional valve protection and general hydraulic systems. Nitrile (Buna-N) seals provide compatibility with standard petroleum-based fluids and mineral oils.

Frequently Asked Questions

What micron rating is the Kaydon KF4509-8?

The Kaydon KF4509-8 has a 12µm micron rating with dualglass filter media, rated at β1000 per ISO 16889.

What are the dimensions of the Kaydon KF4509-8?

The Kaydon KF4509-8 measures 4.39" OD, 3.3" ID, 8.96" overall length.

What seal material does the Kaydon KF4509-8 use?

The Kaydon KF4509-8 uses Nitrile (Buna-N) seals.

Is there a cross-reference for the Kaydon KF4509-8?

Yes. There is 1 verified cross-reference for the Kaydon KF4509-8 from manufacturers including Hy-Pro. Contact VerifiedFilters for specific part numbers and availability.

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