The O-Ring, cataloged under National Stock Number 5331-01-325-3459, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-325-3459 |
| Primary Part Number | NAS1611-220 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Temp Rating | -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 80.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ZZZY |
| Peripheral Diameter | 1.617 INCHES MINIMUM AND 1.657 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.347 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| NAS1611-220 | Boeing Defence Australia Ltd (AUS) |
| NAS1611-220 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| Reference | Meaning |
|---|---|
| 2-220E515-80 | 5/2 Secondary reference U.S. Government activity |
| 2-220E515-80 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| NAS1611-220 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5331-01-325-3459 is a O-Ring, manufactured by Boeing Defence Australia Ltd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-325-3459 has 2 manufacturer part numbers on file: NAS1611-220 (Boeing Defence Australia Ltd), NAS1611-220 (Boeing Defence Australia Ltd Div Defense, Space & Security).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-518-8478, 5331-01-540-8260. Verify interchangeability with system specifications before substitution.
Key specifications for NAS1611-220: Temp Rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: ZZZY. 8 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.