The O-Ring, cataloged under National Stock Number 5331-00-181-5823, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-181-5823 |
| Primary Part Number | KMW504493-23 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.063 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 504493PC23 | Kongsberg Maritime Sweden Ab (SWE) |
| KMW504493-23 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 504493PC23 | 5/9 Secondary reference Karlstads Mekaniska Verkstad Ab |
| 504493PC23 | 5/9 Secondary reference Rolls-Royce Ab |
NSN 5331-00-181-5823 is a O-Ring, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-181-5823 has 2 manufacturer part numbers on file: 504493PC23 (Kongsberg Maritime Sweden Ab), KMW504493-23 (Bird-Johnson Propeller Company, Llc).
Key specifications for KMW504493-23: Cross-Sectional Height: 0.063 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC. 2 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.