The O-Ring, cataloged under National Stock Number 5331-01-522-5558, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Viking Pump, Inc. Government technical data includes 5 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 | 5331-01-522-5558 |
| Primary Part Number | 2-512-033-894 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Viking Pump, Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.139 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | (28112)-AFLAS MFR REF ALL MATERIAL RESPONSES |
| Center Hole Diameter | 2.859 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| 2-512-033-894 PRIMARY | Viking Pump, Inc (USA) |
NSN 5331-01-522-5558 is a O-Ring, manufactured by Viking Pump, Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-522-5558 has 1 manufacturer part number on file: 2-512-033-894 (Viking Pump, Inc).
Key specifications for 2-512-033-894: Cross-Sectional Height: 0.139 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: (28112)-AFLAS MFR REF ALL MATERIAL RESPONSES; Center Hole Diameter: 2.859 INCHES NOMINAL IN. 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.