The O-Ring, cataloged under National Stock Number 5331-01-577-4482, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-577-4482 |
| Primary Part Number | 790541 ITEM NO 21CP |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 0.500 INCHES NOMINAL IN |
| Material | PLASTIC SILICONE |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 790541 ITEM NO 21CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Y49018-014 OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| Y49018-014 OXYGEN CLEAN | 3/1 Design control — primary reference Pacific Consolidated Industries Llc |
| 790541 ITEM NO 21 | 5/1 Secondary reference Pacific Consolidated Industries Llc |
NSN 5331-01-577-4482 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-577-4482 has 2 manufacturer part numbers on file: 790541 ITEM NO 21CP (Naval Inventory Control Point Mechanicsburg), Y49018-014 OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 790541 ITEM NO 21CP: Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Center Hole Diameter: 0.500 INCHES NOMINAL IN; End Item Identification: COLD END ASSY - .500 DIA X .750 STROKE - 5000 PSIG. 5 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.