The O-Ring, cataloged under National Stock Number 5331-01-496-7456, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kalrez Usa, Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-496-7456 |
| Primary Part Number | K90290 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Kalrez Usa, Llc |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Material Document and Classification | DUPONT KALREZ 4079 PERFLUOROELASTOMER ASSN STD SINGLE MATERIAL RESPONSE |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| K90290 PRIMARY | Kalrez Usa, Llc (USA) |
| A9A25001-00616 PRIMARY | Greene Tweed & Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 4074T58P43 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5331-01-496-7456 is a O-Ring, manufactured by Kalrez Usa, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-496-7456 has 2 manufacturer part numbers on file: K90290 (Kalrez Usa, Llc), A9A25001-00616 (Greene Tweed & Co Inc).
Key specifications for K90290: Criticality Code Justification: AGAV; Material Document and Classification: DUPONT KALREZ 4079 PERFLUOROELASTOMER ASSN STD SINGLE MATERIAL RESPONSE; Special Features: USED ON POWER TURBINE MODULE 2840014967473,2840015004959; End Item Identification: AIRCRAFT GAS TURBINE ENGINE. 3 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.