The O-Ring, cataloged under National Stock Number 5331-01-225-5240, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hydrasearch Company, Llc. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-225-5240 |
| Primary Part Number | ARP568-904 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Outside Diameter | 0.495 INCHES NOMINAL IN |
| Center Hole Diameter | 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| ARP568-904 PRIMARY | Hydrasearch Company, Llc (USA) |
| 4564904FG | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4564904EM | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 4564904EB | 5/9 Secondary reference Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
| ARP 904 | 5/9 Secondary reference Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
NSN 5331-01-225-5240 is a O-Ring, manufactured by Hydrasearch Company, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-225-5240 has 2 manufacturer part numbers on file: ARP568-904 (Hydrasearch Company, Llc), 4564904FG (Hydrasearch Company, Llc).
Key specifications for ARP568-904: Cross-Sectional Height: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Outside Diameter: 0.495 INCHES NOMINAL IN; Center Hole Diameter: 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 4 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.