
Maximize your equipment uptime with Ayater’s aftermarket solutions for the 8370 Series. Featuring superior dirt-holding capacity and chemically resistant seals, our filters protect sensitive components from abrasive wear. These drop-in replacements offer a cost-effective strategy for managing hydraulic fluid quality without compromising on durability or flow performance.


Hydraulic failure is frequently traced back to particulate contamination that erodes pumps and jams valves. Ayater's interchange series for 8370 filter elements is designed with a focus on particulate retention efficiency and service life extension. By utilizing advanced synthetic filter media, we ensure that abrasive silt and micron-sized particles are trapped deep within the fiber matrix, preventing the "sandblasting" effect on your system's internal components.

Synthetic Media Pack: Unlike paper elements that swell or degrade in water-contaminated oil, our inert glass fiber media maintains its structural rigidity. This ensures consistent flow rates even as the element reaches its maximum capacity.
Adhesive Bonding: We utilize high-grade epoxy potting compounds to bond the end caps to the media pack. This creates a leak-proof seal, preventing fluid bypass-a common issue in lower-quality alternatives.
Seal Compatibility: Available with standard Nitrile (Buna-N) for petroleum-based fluids or Fluorocarbon (Viton) for high-temperature and phosphate ester applications, ensuring leak-free operation under thermal stress.
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Cost-Effective Maintenance Strategy
Switching to Ayater replacements for your 8370 housings significantly reduces Total Cost of Ownership (TCO). Our elements offer a high dirt-holding capacity, which translates to longer intervals between change-outs. This reduces not only the spend on consumables but also the labor costs associated with maintenance downtime and disposal of used elements.

Construction: Pleated Microglass with corrosion-resistant center tube.
End Cap Configuration: Single Open End (SOE) with external O-ring / Threaded options (depending on specific part number).
Bypass Valve Compatibility: Compatible with housing relief settings (typically 25 PSI or 50 PSI).
Adhesive System: Epoxy / Polyurethane.
Filtration Ratio:
β≥200 to β≥1000
depending on target cleanliness.

Industries Served
Our 8370 replacement series is widely utilized in:
Petrochemical Refineries: Protecting lubrication loops.
Pulp and Paper Mills: Hydraulic press rolls.
Marine Hydraulics: Steering gear and stabilizers.
Mobile Construction: Excavator and crane hydraulic circuits.
Need a Specific 8370 Model? Contact Us Today.
Our inventory is vast. If you are looking for specific lengths or seal arrangements, check the list below or send us an inquiry for a fast quote.
Popular Model Numbers:
HC8370FKS39H
HC8370FKT39Z
HC8370FKP26H
HC8370FKN26Z
HC8370FDT16H
HC8370FDS16Z




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