The O-Ring, cataloged under National Stock Number 5331-00-781-9315, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 3 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 | 5331-00-781-9315 |
| Primary Part Number | 8437640 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Center Hole Diameter | 2.725 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND 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 |
|---|---|
| 8437640 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
NSN 5331-00-781-9315 is a O-Ring, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-781-9315 has 1 manufacturer part number on file: 8437640 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 8437640: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN; Center Hole Diameter: 2.725 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN; Material: PLASTIC POLYTETRAFLUOROETHYLENE AND RUBBER SYNTHETIC. 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.