The O-Ring, cataloged under National Stock Number 5331-01-579-1883, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Maryland Metrics. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-579-1883 |
| Primary Part Number | R398-15710 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Maryland Metrics |
| Status | ACTIVE |
| Cross-Sectional Height | 3.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 19.2 MILLIMETERS NOMINAL MM |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| R398-15710 PRIMARY | Maryland Metrics (USA) |
NSN 5331-01-579-1883 is a O-Ring, manufactured by Maryland Metrics, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-579-1883 has 1 manufacturer part number on file: R398-15710 (Maryland Metrics).
Key specifications for R398-15710: Cross-Sectional Height: 3.0 MILLIMETERS NOMINAL MM; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 19.2 MILLIMETERS NOMINAL MM; End Item Identification: HYDRAULIC CYLINDER. 4 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.