The O-Ring, cataloged under National Stock Number 5331-00-161-9608, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-161-9608 |
| Primary Part Number | 135437-1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| Cross-Sectional Height | 0.117 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN |
| Center Hole Diameter | 7.692 INCHES MINIMUM AND 7.782 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 135437-1 PRIMARY | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| 7737-120 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-00-161-9608 is a O-Ring, manufactured by Raytheon Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-161-9608 has 1 manufacturer part number on file: 135437-1 (Raytheon Company).
1 possible match (shared part number, not a government interchangeability claim): 2940-00-911-5631. Verify interchangeability with system specifications before substitution.
Key specifications for 135437-1: Cross-Sectional Height: 0.117 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN; Center Hole Diameter: 7.692 INCHES MINIMUM AND 7.782 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.