The O-Ring, cataloged under National Stock Number 5331-01-571-2255, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fpz, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-571-2255 |
| Primary Part Number | 750404437851 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Fpz, Inc. |
| Status | ACTIVE |
| Material | RUBBER |
| 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 |
|---|---|
| ITEM 427 SEAL RING K07-MD-7.5 | Fpz, Inc. (USA) |
| 750404437851 PRIMARY | Fpz, Inc. (USA) |
NSN 5331-01-571-2255 is a O-Ring, manufactured by Fpz, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-571-2255 has 2 manufacturer part numbers on file: ITEM 427 SEAL RING K07-MD-7.5 (Fpz, Inc.), 750404437851 (Fpz, Inc.).
Key specifications for 750404437851: Special Features: OUTSIDE DIAMETER 2 INCHES IN; Part Name Assigned by Controlling Agency: SEAL RING; End Item Identification: BLOWER SCL K07-MD-7.5; Material: RUBBER. 1 specification is 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.