The O-Ring, cataloged under National Stock Number 5331-01-477-2834, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-477-2834 |
| Primary Part Number | 4398597-R-77 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 1.000 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN |
| Color | BLACK |
| Center Hole Diameter | 19.000 INCHES MINIMUM AND 19.095 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 4398597-R-77 PRIMARY | Naval Sea Systems Command (USA) |
| 7325823-1 PRIMARY | West American Rubber Company, Llc. Dba West American Rubber Co Llc (USA) |
| 7325823-1 | Naval Sea Systems Command (USA) |
NSN 5331-01-477-2834 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-477-2834 has 3 manufacturer part numbers on file: 4398597-R-77 (Naval Sea Systems Command), 7325823-1 (West American Rubber Company, Llc. Dba West American Rubber Co Llc), 7325823-1 (Naval Sea Systems Command).
Key specifications for 4398597-R-77: Cross-Sectional Height: 1.000 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN; Color: BLACK; Special Features: RUBBER SEAL DIMENSION TOLERANCES ARE BASED UPON RMA A-3 COMMERCIAL TOLERANCES; MATERIAL IS NEOPRENE 50 = 5 DUROMETER COMPOUND NO 50E18; Center Hole Diameter: 19.000 INCHES MINIMUM AND 19.095 INCHES MAXIMUM IN. 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.