The O-Ring, cataloged under National Stock Number 5331-00-253-2805, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Donaldson Company, Inc.. 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. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-253-2805 |
| Primary Part Number | 121023 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 121023 PRIMARY | Donaldson Company, Inc. (USA) |
NSN 5331-00-253-2805 is a O-Ring, manufactured by Donaldson Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-253-2805 has 1 manufacturer part number on file: 121023 (Donaldson Company, Inc.).
6 possible matches (shared part number, not a government interchangeability claim): 1680-00-829-9063, 5915-00-979-3858, 5331-01-174-4697. Verify interchangeability with system specifications before substitution.
Key specifications for 121023: Cross-Sectional Height: 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Center Hole Diameter: 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.