The O-Ring, cataloged under National Stock Number 5331-00-564-9923, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-564-9923 |
| Primary Part Number | 8515217 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Center Hole Diameter | 54.375 INCHES MINIMUM AND 54.875 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM OR RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |
| 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 |
|---|---|
| 8515217 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 5331-00-564-9923 is a O-Ring, manufactured by Us Army Aviation and Missile Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-564-9923 has 1 manufacturer part number on file: 8515217 (Us Army Aviation and Missile Command).
Key specifications for 8515217: Cross-Sectional Height: 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; Center Hole Diameter: 54.375 INCHES MINIMUM AND 54.875 INCHES MAXIMUM IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM OR RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR. 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.