Eaton / Internormen · 01.E / 01.N / Easy-Fit · return line

01.E 631.16VG.16.S1.P filter element: specifications & equivalents

Q: What are the dimensions of the 01.E 631.16VG.16.S1.P filter element?

The published envelope is 102 mm OD × 312 mm length (4.016 × 12.283 in). Confirm against the housing drawing before ordering.

Q: What micron rating does 01.E 631.16VG.16.S1.P use?

This element is rated 15 µm absolute. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The 01.E 631.16VG.16.S1.P is a Eaton / Internormen return-line hydraulic filter element, built with glass fiber fleece (vg) media, sized 102 × 312 mm OD × length, rated at 15 µm absolute. Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 102 × 312 mm

Filtration rating 15 µm abs.

Media Glass fiber fleece (VG)

Collapse / burst 16 bar

Line type return

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.90.

Specs come from Eaton's product data hub via its site-search API. The µm retention rating follows ISO 16889 (absolute convention), while the model-code fineness grade is nominal — match both before substituting.

Specification table

Parameter	Value
Filter type	return line
Media	Glass fiber fleece (VG)
Filtration rating	15 µm
Rating basis	absolute
Outside diameter OD	102 mm
Length	312 mm
End caps	open-ended cartridge element
Collapse / burst pressure	16 bar
Integral bypass valve	none (housing/valve-dependent)
Seal material	Nitrile (Buna-N)
Manufacturer part no.	311533
Source catalog	Eaton: Eaton product data hub via site search API (eaton.com)
Last verified	2026-09-28

Sources: Eaton — Eaton product data hub via site search API (eaton.com) — accessed 2026-09-29.

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

Dimensions & series range

Outside diameter	102 mm (4.016 in)
Overall length	312 mm (12.283 in)

All 102×312 mm interchange elements →

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 01.E 631.16VG.16.S1.P model number is decoded

01.E 631.16VG.16.S1.PEaton 01.E Return-Line filter element model code (Eaton 01.E Return line Filter Element).
311533Eaton catalog number (order code) for the same element.
16 VGFilter fineness grade: nominal rating and media letter.
15 µmISO 16889 multipass retention rating as published by Eaton.
Glass fiber fleece (VG)Filter media execution.
16 barDelta-P resistance class — maximum differential pressure (collapse) rating.
Nitrile (Buna-N)Seal compound.
102 mmOuter diameter.
312 mmElement height.

Typical equipment & applications

Tank-mounted return-line hydraulic filters
Hydraulic power units and lubrication systems
Construction and agricultural machinery
Machine tool and industrial hydraulic systems

Selection pitfalls — read before you substitute

A return-line element is not a pressure-line element: return cartridges (low-collapse) tolerate roughly 20 bar differential, while BH4HC pressure executions are rated to 210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
This element has no integral bypass — opening pressure is set by the housing’s reusable bypass valve. Confirm the valve setting (commonly 3.4 bar) is present before fitting.
“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 are the dimensions of the 01.E 631.16VG.16.S1.P filter element?

The published envelope is 102 mm OD × 312 mm length (4.016 × 12.283 in). Confirm against the housing drawing before ordering.

What micron rating does 01.E 631.16VG.16.S1.P use?

This element is rated 15 µm absolute. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the 01.E 631.16VG.16.S1.P 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 01.E 631.16VG.16.S1.P part number?

See the designation decoder above: each segment of 01E63116VG16S1P 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.

Same-envelope elements from other brands

View full interchange →

These 70 catalog element(s) share the 102×312 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

Other models in the 01.E / 01.N / Easy-Fit series

All 3329 →

01.1910.40G.16.E.O.SON 44×110 mm 01.20213.130G.E.O 102×202 mm 01.21657.25VG.10.B.N.IS09 140×459 mm 01.41542.25VG.16.B.N.IS09 90×558 mm · 20 µm 01.AS 180.250G.-.E.T.- 80×315 mm · 250 µm 01.AS 180.40G.-.E.T.- 80×315 mm · 40 µm 01.AS 180.80G.-.E.T.- 80×315 mm · 80 µm 01.AS 220.130G.-.B.-.- 79×274 mm · 130 µm 01.AS 220.250G.-.B.-.- 79×274 mm · 250 µm 01.AS 220.25G.-.B.-.- 79×274 mm · 25 µm

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