The O-Ring, cataloged under National Stock Number 5331-01-565-1683, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fiber Systems International, Inc. Div Fiber Systems International. 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 | 5331-01-565-1683 |
| Primary Part Number | FSPP-309-04-019 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Fiber Systems International, Inc. Div Fiber Systems International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Color | BLACK |
| Center Hole Diameter | 0.801 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| FSPP-309-04-019 PRIMARY | Fiber Systems International, Inc. Div Fiber Systems International (USA) |
NSN 5331-01-565-1683 is a O-Ring, manufactured by Fiber Systems International, Inc. Div Fiber Systems International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-565-1683 has 1 manufacturer part number on file: FSPP-309-04-019 (Fiber Systems International, Inc. Div Fiber Systems International).
Key specifications for FSPP-309-04-019: Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Color: BLACK; Center Hole Diameter: 0.801 INCHES NOMINAL IN; End Item Identification: 4935-01-182-0578. 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.