The O-Ring, cataloged under National Stock Number 5331-01-078-5121, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Solventum Purification Inc. Div Filtration and Separation Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-078-5121 |
| Primary Part Number | 89305-244 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Solventum Purification Inc. Div Filtration and Separation Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 4.204 INCHES MINIMUM AND 4.264 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 89305-244 PRIMARY | Solventum Purification Inc. Div Filtration and Separation Division (USA) |
NSN 5331-01-078-5121 is a O-Ring, manufactured by Solventum Purification Inc. Div Filtration and Separation Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-078-5121 has 1 manufacturer part number on file: 89305-244 (Solventum Purification Inc. Div Filtration and Separation Division).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-276-1818. Verify interchangeability with system specifications before substitution.
Key specifications for 89305-244: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 4.204 INCHES MINIMUM AND 4.264 INCHES MAXIMUM IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.