Stauff SF-65 Spin-On Filter Elements

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Description

SF-65 Series Spin-On Filters: Filtration Solutions for Hydraulic Circuits

The Stauff SF-65 series offers spin-on (screw-on) filter elements designed to operate safely at working pressures up to 14 bar (200 PSI) and with a minimum burst pressure of 20 bar (290 PSI). They are compatible with mineral oils and ideal for applications requiring reliability and easy replacement.

Construction Features and Dimensions

The SF-65 elements are defined by the following rigorous technical specifications:

Connection: 1-12 UNF thread.
Sealing: NBR (Buna-N®) seals with Type A sealing profile.
Dimensions: The elements have an outside diameter of 93.2 mm (3.67 in).
Lengths: Available in three main lengths for different dirt-holding capacities: 147 mm, 204 mm, and 133 mm.

Types of Filter Media

The SF-65 series allows selection among different materials according to filtration requirements:

Inorganic Glass Fibre: For fine, high-efficiency filtration, available in 3 µm, 10 µm, and 25 µm ratings (codes SF-6521, SF-6510, SF-6511, SF-6549).
Paper (Filter Paper): Paper media with a nominal filtration rating of 10 µm (code SF-6520).
Water Absorbing: Elements designed to remove water, available with filtration ratings of 10 µm (SF-6520-W) or 25 µm (SF-6504), including specific options such as SF-6505. Note: model SF-6520-W has a maximum operating pressure of 7 bar.

Summary technical table of the main features of Stauff SF-65 Spin-On Filter Elements

Feature	Value
Series	SF-65
Connection Thread	1-12 UNF
Max Operating Pressure	14 bar (200 PSI) (7 bar for SF-6520-W)
Min Burst Pressure	20 bar (290 PSI)
Seal Material	NBR (Buna-N®)
Outside Diameter	93.2 mm
Available Filter Media	Paper (10 µm), Fibre (3, 10, 25 µm), Water Absorbing
Operating Temperature	-30 °C … +100 °C

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