The O-Ring, cataloged under National Stock Number 5331-01-270-6191, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-270-6191 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Material | RUBBER SYNTHETIC |
| 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 |
| Reference | Meaning |
|---|---|
| 10237 ITEM 13 | 5/1 Secondary reference Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| 58-010-56 CP | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 58-010-56 | 3/1 Design control — primary reference Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| 10237 ITEM 13 CP | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 5331-01-270-6191 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-270-6191: Criticality Code Justification: ZZZY; Material: RUBBER SYNTHETIC; 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.