The O-Ring, cataloged under National Stock Number 5331-01-313-4947, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Centofanti Marine Service Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Centofanti Marine Service Inc (CAGE 0A0L9) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-313-4947 |
| Primary Part Number | H239-25 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Centofanti Marine Service Inc |
| 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 |
|---|---|
| H239-25 PRIMARY | Centofanti Marine Service Inc (USA) |
| Reference | Meaning |
|---|---|
| H239-25 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-313-4947 is a O-Ring, manufactured by Centofanti Marine Service Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-313-4947 has 1 manufacturer part number on file: H239-25 (Centofanti Marine Service Inc).
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.