Eaton is the housing brand that set the industry’s size standard, and their descriptive bag part numbers decode field by field — media, micron, cover, size, ring, options, box count. If you buy Eaton bags for Eaton (or any standard) housings, we manufacture functional equivalents in the same sizes, media, and micron ratings, made in New Jersey. Read your part number against the tables below, or send it through the quote form.
Anatomy of an Eaton Part Number
Eaton’s descriptive numbers read: media – micron – cover+size+ring – options – box count. Their own catalog example: PO-10-P04S-H-20 = POlypropylene felt, 10 micron, Plain cover, size 04 (4″×14″), carbon Steel snap ring, Handle, 20 per box. The middle block runs together: in PO-10-P02E-WW-30, “P02E” is plain cover + size 02 + polypropylene SENTINEL™ ring, and WW = fully welded.
Important: Eaton also uses opaque stock numbers (F31S36503, F5869139…) that don’t decode — those are SKUs, not descriptions. The descriptive string is on the box and bag label; that’s the one to read.
Media Codes
| Eaton code | Meaning | Universal Filters equivalent |
|---|---|---|
| PO / PE | Polypropylene / polyester needled felt, singed | PO/PG and PE/PEG felt, 1–200 µm |
| POF / PEF | FDA-compliant felt (CLEARGAF™ program) | FDA-grade felt with vendor certificates of conformance |
| POXL / PEXL | Extended-life glazed felt (DURAGAF™) | POXL “Extended Life” series — same designation |
| N / HT / PT | Nylon / Nomex® / PTFE felt | Nylon felt by application; Nomex® to ~450°F; PTFE quoted |
| NMO | Nylon monofilament mesh | NMO mesh, 35–800 µm (coarser quoted) |
| PMO / PEMO / PEMU | Polypro / polyester mono, polyester multifilament mesh | Matching mesh — PMO / PEMU |
| AGF / AGFE | ACCUGAF™ absolute meltblown (grades 51–59) | POMB / POMX microfiber series — crossed on efficiency at micron (see note) |
| LCR / PGF | LOFCLEAR™ / PROGAF™ multi-layer meltblown | LOFCLEAR 100-type duties cross to POMA / POMX; pleated & progressive-density constructions are performance-quoted |
Meltblown grade warning: in ACCUGAF, PROGAF, and LOFCLEAR numbers the second field is an efficiency grade, not a micron — AGF-53 is roughly a 3 µm bag, not 53 µm. We cross these lines on the published efficiency-at-micron spec, and we’ll tell you when a performance test is the honest route.
Size, Ring & Option Codes
| Eaton code | Meaning | Universal Filters cross |
|---|---|---|
| Sizes 01 / 02 / 03 / 04 | 7″×16–17″, 7″×32″, 4″×8–9″, 4″×14–15″ | Standard sizes 1–4 — direct interchange, same housings |
| Sizes 43 / 45 | BANDSEAL™ tie-on, 3.5″×12″ / 20″ | Tie-on bags to dimension |
| S / A (ring) | Carbon steel / stainless snap ring, sewn | S galvanized ring / SS stainless ring |
| O / B (ring) | Polypropylene / nylon snap ring | SP polypropylene / nylon rings |
| E / H / Z (ring) | SENTINEL™ plastic seal ring (PP / PET / Santoprene), welded lines | Snap-seal flange top — fits standard housings; Eaton’s seal profile sits slightly different, and where a housing is sensitive we solve it with a spacer or top-style change |
| P (cover) | Plain, no cover — the common case | Standard construction |
| E / R / A / N (cover) | Mesh or spun-bond outer covers | Cover constructions quoted by application |
| H (option) | Twill handle | Handles (H) — standard option |
| W / WW / Y (option) | Welded side+bottom / fully welded / side-welded | Ultrasonically welded construction |
| L / K / C (option) | Extra length / flat bucket bottom / reverse collar | Built as custom features |
| Trailing number (+S/M/L/X) | Bags per box (EMEA adds a box-size letter) | Packaging — we quote per-bag or per-case as you prefer |
Worked Examples
| Eaton part number | What it is | Universal Filters equivalent |
|---|---|---|
| PO-10-P04S-H-20 | Polypro felt, 10 µm, size 4, steel ring, handle | PO-10 felt, size 4, S ring, handle |
| PO-10-P02E-WW-30 | SENTINEL welded polypro felt, 10 µm, size 2 | Welded PG-10, size 2, snap-seal flange |
| PE-75-P02E-WW-30 | SENTINEL welded polyester felt, 75 µm, size 2 | Welded PEG-75, size 2, snap-seal flange |
| NMO-100-P02E | Nylon mesh, 100 µm, size 2, SENTINEL ring | NMO-100 mesh, size 2, flange top |
| POXL-10-P02E-20L | DURAGAF extended-life polypro, 10 µm, size 2 | POXL-10, size 2, flange top |
| PEXL-10-P02H-20L | DURAGAF polyester, 10 µm, size 2, PET ring | PEXL-type polyester extended-life, size 2 — specify service temp |
| AGF-53-E02E-O-20 | ACCUGAF meltblown, grade 53 (≈3 µm), size 2 | POMB/POMX at 3 µm, size 2 — efficiency-matched |
| POF-25-P01S | FDA polypro felt, 25 µm, size 1, steel ring | FDA-grade PO-25, size 1, S ring, certs on file |
What Doesn’t Cross — Honestly
HAYFLOW™ elements (the “HAY” block in the part number) are a two-cylinder bag/cartridge hybrid that requires Eaton’s own restrainer basket — there is no generic drop-in equivalent, and anyone who says otherwise is guessing. The same honesty applies to LOFCLEAR™ 500 pleated bags and PROGAF™ progressive-density bags: proprietary constructions we cross only on a performance basis, sometimes with a two-stage arrangement that meets the same spec at lower cost. Standard SNAP-RING, SENTINEL, DURAGAF, and mesh lines cross directly.
Fit Notes
Our snap-seal flange and ring tops fit standard Eaton housings. Eaton’s SENTINEL flange profile sits slightly taller than ours; in the rare application where the differential matters, we address it with a spacer or a top-style change — tell us the housing model and we’ll get it right. Eaton lists size 01 as 7″×16–17″ depending on the document; our 16.5″ bags fit the same baskets.
Cross an Eaton part number now: request a quote or call 800-554-8555.
Eaton, SENTINEL, DURAGAF, CLEARGAF, ACCUGAF, LOFCLEAR, PROGAF, HAYFLOW, UNIBAG, and BANDSEAL are trademarks of Eaton Corporation or its affiliates. Nomenclature above is drawn from Eaton’s published bag nomenclature chart and catalogs for identification purposes only. Universal Filters is not affiliated with Eaton; we manufacture compatible replacement filter bags.