The O-Ring, cataloged under National Stock Number 5331-01-213-9968, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-213-9968 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Cross-Sectional Height | 0.103 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 1.799 INCHES NOMINAL IN |
| Material | RUBBER SILICONE CLASS Q |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION |
| 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 |
|---|---|
| 1154F02-4 | 3/1 Design control — primary reference U.S. Government activity |
| LL-HX3-1081 | 5/9 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
NSN 5331-01-213-9968 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-213-9968: Cross-Sectional Height: 0.103 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Center Hole Diameter: 1.799 INCHES NOMINAL IN; Material: RUBBER SILICONE CLASS Q. 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.