The O-Ring, cataloged under National Stock Number 5331-01-373-1960, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Aerojet Rocketdyne Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-373-1960 |
| Primary Part Number | 1166366-2 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Aerojet Rocketdyne Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.098 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | FEAT |
| Material Document and Classification | ZZ-R-765,CLASS 1B,GRADE 70 FED SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 2.573 INCHES MINIMUM AND 2.619 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| 1166366-2 PRIMARY | Aerojet Rocketdyne Inc (USA) |
| Reference | Meaning |
|---|---|
| 5331PL0658545 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-373-1960 is a O-Ring, manufactured by Aerojet Rocketdyne Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-373-1960 has 1 manufacturer part number on file: 1166366-2 (Aerojet Rocketdyne Inc).
Key specifications for 1166366-2: Cross-Sectional Height: 0.098 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: FEAT; Material Document and Classification: ZZ-R-765,CLASS 1B,GRADE 70 FED SPEC SINGLE MATERIAL RESPONSE. 6 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.