STAUFF · Replacement Elements · inline line
NL-040-F-25-B filter element: specifications & equivalents
The NL-040-F-25-B is a STAUFF inline-line hydraulic filter element, sized 44.5 × 99 mm OD × length (ID 22.2 mm). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 44.5 × 99 mm
Inside diameter 22.2 mm
Line type inline
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 0.85.
Micron rating, media type, collapse pressure and seal material are not printed in the STAUFF interchange listing and are pending extraction from STAUFF product data sheets. Verify against the current STAUFF catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Filter type | inline line |
| Outside diameter OD | 44.5 mm |
| Inside diameter ID | 22.2 mm |
| Length | 99 mm |
| Integral bypass valve | none (housing/valve-dependent) |
| Source catalog | STAUFF: STAUFF Filter Interchange online database (filterinterchange.com) |
| Last verified | 2026-09-28 |
Sources: STAUFF — STAUFF Filter Interchange online database (filterinterchange.com) — accessed 2026-09-27.
STAUFF® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized STAUFF distributor.
Dimensions & series range
| Outside diameter | 44.5 mm (1.752 in) |
| Inside diameter | 22.2 mm (0.874 in) |
| Overall length | 99 mm (3.898 in) |
All 45×99 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 0040DN025BH4HC page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists 0040 DN 025 BH4HC (HYDAC) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ 0040DN025BHHC page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists 0040 DN 025 BH/HC (HYDAC) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
| ↔ 01.NL 40.25VG.HR.E.P.- | Eaton / Internormen | partial | STAUFF Filter Interchange lists 01NL4025VGHREP (INTERNORMEN) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ 1265321 page in verification queue | UFI | partial | STAUFF Filter Interchange lists 1265321 (HYDAC) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ 20040H20SLB page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists 20040H20SLB (EPE / Bosch-Rexroth Filtration) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ 20040PWR20B page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists 20040PWR20B (EPE / Bosch-Rexroth Filtration) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ FDAE1A20QH page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists FDAE 1A20QH (PARKER) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ N0040DH2025 page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists N0040DH2025 (COMEX / Ecoparts) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ N0040DH25 page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists N0040DH25 (COMEX / Ecoparts) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ PI75004DN page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists PI 75004DN (MAHLE / Filtration Group) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ R928006657 page in verification queue | Aftermarket | partial | STAUFF Filter Interchange lists R928006657 (EPE / Bosch-Rexroth Filtration) as replaced by NL-040-F-25-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
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 NL-040-F-25-B model number is decoded
- NL-040-F-25-BSTAUFF replacement element part number per the STAUFF Filter Interchange database.
Typical equipment & applications
- Replacement element for OEM hydraulic filter housings
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 are the dimensions of the NL-040-F-25-B filter element?
The published envelope is 44.5 mm OD × 99 mm length with a 22.2 mm inside diameter (1.752 × 3.898 in × 0.874 in ID). Confirm against the housing drawing before ordering.
What replaces the NL-040-F-25-B filter element?
11 partial match(es) requiring parameter review
How do I read the NL-040-F-25-B part number?
See the designation decoder above: each segment of NL040F25B 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 41 catalog element(s) share the 45×99 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
HD506 NL-040-B-100-B NL-040-B-10-B NL-040-B-25-B NL-040-B-25-V NL-040-B-40-B NL-040-B-40-V NL-040-B-50-V NL-040-B-60-B NL-040-B-60-V
Other models in the Replacement Elements series
All 4930 → AD-030-B-125-B AD-030-B-40-B AD-030-B-60-B AD-030-B-80-B AD-030-E-20-B AD-033-B-40-B AD-033-B-60-B AD-033-B-80-B AD-033-E-10-B BL-200-E-10-B
Reviewed & verified by the ElementRef engineering desk against STAUFF on 2026-09-28. Read our editorial & correction policy.