The O-Ring, cataloged under National Stock Number 5331-01-380-6623, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Marconi Communications Inc. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-380-6623 |
| Primary Part Number | PC-64611-274 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Marconi Communications Inc |
| Status | ACTIVE |
| Temp Rating | -20.0 CELSIUS AND 70.0 CELSIUS DEGC |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MINIMUM AND 90.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MAXIMUM |
| Center Hole Diameter | 9.929 INCHES MINIMUM AND 10.039 INCHES MAXIMUM 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 |
|---|---|
| PC-64611-274 | Leonardo Mw Ltd (GBR) |
| PC-64611-274 PRIMARY | Marconi Communications Inc (USA) |
NSN 5331-01-380-6623 is a O-Ring, manufactured by Marconi Communications Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-380-6623 has 2 manufacturer part numbers on file: PC-64611-274 (Leonardo Mw Ltd), PC-64611-274 (Marconi Communications Inc).
Key specifications for PC-64611-274: Temp Rating: -20.0 CELSIUS AND 70.0 CELSIUS DEGC; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 75.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MINIMUM AND 90.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MAXIMUM; Special Features: ALL RINGS SHALL COMPLY DIMENSIONALLY WITH THE REQUIREMENTS OF BS 1806. 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.