The O-Ring, cataloged under National Stock Number 5331-01-438-8436, 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. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Circor Pumps North America Llc (CAGE 59180) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-438-8436 |
| Primary Part Number | ACG 052N3 D169 IVBP |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| ACG 052N3 D169 IVBP | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| ACG 052N3 D169 | 3/9 Design control — primary reference Imo Ab |
NSN 5331-01-438-8436 is a O-Ring, manufactured by Circor Pumps North America Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-438-8436 has 1 manufacturer part number on file: ACG 052N3 D169 IVBP (Circor Pumps North America Llc).
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.