The O-Ring, cataloged under National Stock Number 5331-01-496-9735, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-496-9735 |
| Primary Part Number | 561-6985096-11 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-R-6855 CL 1,GR 70 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 13.560 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 561-6985096-11 PRIMARY | Naval Sea Systems Command (USA) |
| 561-6985096-19 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H513-1304-19 | 5/9 Secondary reference U.S. Government activity |
| H513-1304-11 | 5/2 Secondary reference U.S. Government activity |
NSN 5331-01-496-9735 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-496-9735 has 2 manufacturer part numbers on file: 561-6985096-11 (Naval Sea Systems Command), 561-6985096-19 (Naval Sea Systems Command).
Key specifications for 561-6985096-11: Cross-Sectional Height: 0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-R-6855 CL 1,GR 70 MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 13.560 INCHES NOMINAL IN. 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.