The O-Ring, cataloged under National Stock Number 5331-00-599-3028, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-599-3028 |
| Primary Part Number | PP-056SB5-011 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.064 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.296 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| PP-056SB5-011 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| PD5330-227-1 | 5/9 Secondary reference U.S. Government activity |
| S1423BAC | 5/9 Secondary reference Siemens Energy, Inc. |
| S1423BAC | 5/9 Secondary reference Circor Pumps North America Llc |
NSN 5331-00-599-3028 is a O-Ring, manufactured by Circor Pumps North America Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-599-3028 has 1 manufacturer part number on file: PP-056SB5-011 (Circor Pumps North America Llc).
Key specifications for PP-056SB5-011: Cross-Sectional Height: 0.064 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Center Hole Diameter: 0.296 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN; Material: RUBBER CHLOROPRENE CLASS CR. 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.