The O-Ring, cataloged under National Stock Number 5331-01-492-8427, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-492-8427 |
| Primary Part Number | 2-278E515-80 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Cross-Sectional Height | 0.065 INCHES NOMINAL IN |
| Hardness Rating | 80.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-P-82744 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 11.984 INCHES NOMINAL 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 |
|---|---|
| 2-278E515-80 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| CP031A278D3 | 5/9 Secondary reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
| 515-AV-MMA-030 FIG 7-9/3 | 5/9 Secondary reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
| 2-278E515-80 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-492-8427 is a O-Ring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-492-8427 has 1 manufacturer part number on file: 2-278E515-80 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 2-278E515-80: Cross-Sectional Height: 0.065 INCHES NOMINAL IN; Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-P-82744 MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 11.984 INCHES NOMINAL IN. 5 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.