ARGO-HYTOS · Hydraulic Filters · suction line

AS 120-06K filter element: specifications & equivalents

Q: What micron rating does AS 120-06K use?

This element is rated 450 µm (nominal class). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The AS 120-06K is a ARGO-HYTOS suction-line hydraulic filter element, rated at 450 µm class. Verify against the current manufacturer data sheet before ordering.

Filtration rating 450 µm nom.

Line type suction

Partially verified. Fit and grade trace to an official interchange document; dimensional values are compiled from 0 aftermarket listing(s) and must be confirmed against the manufacturer housing drawing. Confidence score 0.88.

Nominal pressure, bypass setting and rated flow are taken from the ARGO-HYTOS product portal. Verify port configuration and element compatibility against the current ARGO-HYTOS data sheet before ordering.

Specification table

Parameter	Value
Filter type	suction line
Filtration rating	450 µm
Rating basis	nominal
Rated flow	120 L/min
Integral bypass valve	none (housing/valve-dependent)
Mass	435 g
Manufacturer part no.	31312700
Source catalog	ARGO-HYTOS: ARGO-HYTOS product portal (portal.argo-hytos.com)
Last verified	2026-09-28

Sources: ARGO-HYTOS — ARGO-HYTOS product portal (portal.argo-hytos.com) — accessed 2026-09-28.

ARGO-HYTOS® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized ARGO-HYTOS distributor.

Cross references & equivalents

No catalog-verified cross references yet. This model is in the manual verification queue — request a verified equivalent.

Interchange levels: full catalog-confirmed drop-in · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the AS 120-06K model number is decoded

AS 120-06KARGO-HYTOS suction filter assembly part number (Suction Filter) per the official product portal.
450 µmPublished filter fineness (nominal rating as printed by ARGO-HYTOS).
120 l/minRated flow of the filter assembly.

Typical equipment & applications

Pump suction-line protection
Hydraulic power units

Selection pitfalls — read before you substitute

“10 µm nominal” and “12 µm at β1000” can describe the very same media — one is reported at β≥200, the other at β≥1000 per ISO 16889. Compare ratings at the same Beta test point, not just the printed micron number.
Nitrile (NBR) seals are standard for mineral hydraulic oil but fail early in some phosphate-ester fluids and at sustained high temperature; verify seal compound against the fluid data sheet (fluorocarbon/Viton executions may be required).
End-cap geometry and the number/position of O-rings block interchange even when OD and length match — visually compare end caps before fitting, especially with aftermarket cartridges.

Frequently asked questions

What micron rating does AS 120-06K use?

This element is rated 450 µm (nominal class). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the AS 120-06K filter element?

Cross references are being verified for this model — use the inquiry form and the engineering desk will confirm equivalents.

How do I read the AS 120-06K part number?

See the designation decoder above: each segment of AHAS12006K encodes size, line type, filtration grade and media/collapse execution.

Is a same-envelope aftermarket element always a drop-in replacement?

No. Matching OD and length only proves the cartridge fits the bowl. End-cap style, seal compound, micron/Beta rating, collapse pressure and bypass configuration must also match; the table above tags every equivalent as full, partial or verify for exactly this reason.

How often should a hydraulic return-line element be replaced?

Replace at the housing manufacturer’s recommended differential-pressure setting (commonly signalled by a clogging indicator), or on a time-based service interval when no indicator is fitted — never wait for bypass to open continuously, because unfiltered oil then reaches the valves.

Other models in the Hydraulic Filters series

All 767 →

AS 010-00K 100 µm AS 025-01K 100 µm AS 025-12S 200 µm AS 025-14K 100 µm AS 039-18S AS 040-01K 100 µm AS 040-71K 100 µm AS 060-01K 100 µm AS 060-04K8 100 µm AS 060-91S 100 µm

Reviewed & verified by the ElementRef engineering desk against ARGO-HYTOS on 2026-09-28. Read our editorial & correction policy.