The O-Ring, cataloged under National Stock Number 5331-01-521-3816, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Climate Control Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-521-3816 |
| Primary Part Number | 028-25133 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Climate Control Inc |
| Status | ACTIVE |
| Center Hole Diameter | 0.334 INCHES NOMINAL 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 |
|---|---|
| 028-25133 PRIMARY | Climate Control Inc (USA) |
NSN 5331-01-521-3816 is a O-Ring, manufactured by Climate Control Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-521-3816 has 1 manufacturer part number on file: 028-25133 (Climate Control Inc).
Key specifications for 028-25133: Special Features: MATERIAL IS NEOPRENE 70 DURO SHORE 'A'; Center Hole Diameter: 0.334 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: OIL PLUG; End Item Identification: 2320-01-432-4847; TRUCK TRACTOR. 2 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.