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HF4RT Series In-Tank Return Filter, 23 inch 5 Micron Absolute C-pak Element, Ports, Up To GPM

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Description & Features

The HF4RT Series In-Tank Return Filter is specifically designed for return lines in mobile and industrial hydraulic systems. Measuring 23 inches in length this filter features a high-performance 5 Micron Absolute C-pak element ensuring superior filtration. This unit is constructed with an aluminum head and cover along with a carbon steel bowl ensuring durability and longevity in demanding applications.

Suitable for use with petroleum-based fluids and most water glycol oil-in-water and water-in-oil fluids this filter comes with standard Buna-N seals. It is designed to comply with ANSI specifications and ISO cleanliness standards guaranteeing consistent and reliable performance. This filter also includes a 0-160 PSI gauge for monitoring purposes and operates efficiently within a temperature range of -25deg;F to 250deg;F.

The filter head is equipped with a 1/8 NPT tapped and plugged port for an optional pressure gauge or switch. Rated for a maximum operating pressure of 100 PSI it offers a flow rating of 100 GPM for the 18-inch element. The in-tank design minimizes potential leakage points and space requirements making it an ideal choice for compact system configurations.

MPN: HF4RT1SD4GB6XXBC05

Supplier Part Number: 1VFTM00043

Specifications

Brand
EATON
Cleanliness Level
18/16/14 or Better
Element
5 um Absolute C-pak
grp Element
C-Pak Elements: High-Performance Absolute Rated 5-Layer Media Featuring Proprietary Vickers Glass Micro Fiber Media with Special Resin Binder Placed Between Non Woven Synthetic Diffuser Layers, with Epoxy-Coated Carbon Steel Mesh Upstream and Downstream S
grp Fluids Seals
Suitable for Use with Petroleum Based and Most Water Glycol, Oil-in-water and Water-in-oil Fluids, Buna-N Seals are Standard, Synthetic Fluids Require Optional Viton® Seals
grp Indicators
Filter Head Is Drilled and Tapped 1/8 NPT (and Plugged) For Optional Pressure Gauge or Switch
grp Materials
Aluminum Head and Cover, Carbon Steel Bowl
Head Material
Aluminum
Housing Finish
Epoxy-Coated
Housing Material
Aluminum/Carbon Steel
Indicator
0 to 10 bar Gauge
Model
HF4RT1SD4GB6XXBC05
Mounting Type
In-Tank
Port Connection Type
SAE, UN
Port Size
1.875-12, #24
Seal Material
Buna-N
Series
HF4RT Series

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Product Questions & Answers (2)

Question by: Gary M on Jun 7, 2025, 4:21 PM
Will this filter work with standard hydraulic fluid, or do I need something special?
Answer by: Customer Support on Jun 9, 2025, 11:22 AM
It's suitable for petroleum-based fluids, most water glycol, oil-in-water, and water-in-oil fluids right out of the box. Just keep in mind that if you're running synthetic fluids, you'll need to swap out the standard Buna-N seals for optional Viton® seals.
Question by: Norm L on Dec 8, 2025, 2:34 PM
got a tight reservoir setup. is this one of them in-tank return filters that helps cut down on leak points?
Answer by: Customer Support on Dec 9, 2025, 5:31 PM
In-tank mounting is the whole idea with the HF4RT return filter, so you are not stacking extra external fittings in the return line. That layout helps save space and reduces potential leak points compared to a more external hydraulic connections approach.

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