The O-Ring, cataloged under National Stock Number 5331-01-454-2280, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Chemetron Fire Systems. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Chemetron Fire Systems (CAGE 1CSX7); Parker Hannifin Corporation Div O-Ring Division (CAGE 25184) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-454-2280 |
| Primary Part Number | C-41644 ITEM-2 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Chemetron Fire Systems |
| 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 |
|---|---|
| C-41644 ITEM-2 PRIMARY | Chemetron Fire Systems (USA) |
| C41390 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| 5-023-0508 #012 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-454-2280 is a O-Ring, manufactured by Chemetron Fire Systems, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-454-2280 has 2 manufacturer part numbers on file: C-41644 ITEM-2 (Chemetron Fire Systems), C41390 (Parker Hannifin Corporation Div O-Ring Division).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-514-7458. Verify interchangeability with system specifications before substitution.
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.