The O-Ring, cataloged under National Stock Number 5331-01-588-2720, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-588-2720 |
| Primary Part Number | S9553-CH-MMO-010 FIG 7-35-4 CP |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 4.234 INCHES NOMINAL IN |
| 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 |
|---|---|
| S9553-CH-MMO-010 FIG 7-35-4 CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Y49021-244 OXYGEN CLEAN CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| Y49021-244 OXYGEN CLEAN | 3/1 Design control — primary reference Pacific Consolidated Industries Llc |
| S9553-CH-MMO-010 FIG 7-35-4 | 5/1 Secondary reference Pacific Consolidated Industries Llc |
NSN 5331-01-588-2720 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-588-2720 has 2 manufacturer part numbers on file: S9553-CH-MMO-010 FIG 7-35-4 CP (Naval Inventory Control Point Mechanicsburg), Y49021-244 OXYGEN CLEAN CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for S9553-CH-MMO-010 FIG 7-35-4 CP: Criticality Code Justification: ZZZY; Center Hole Diameter: 4.234 INCHES NOMINAL IN; End Item Identification: ABSORBER ASSY DSCC 792575-002 OXYGEN CLEAN; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 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.