The O-Ring, cataloged under National Stock Number 5331-01-422-5344, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-422-5344 |
| Primary Part Number | P691 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
| Status | ACTIVE |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| 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 |
|---|---|
| P691 PRIMARY | Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA) |
| Reference | Meaning |
|---|---|
| P691 | 5/9 Secondary reference Cherry Textron Inc Cherry Commercial Fasteners Products Div of Textron Inc |
NSN 5331-01-422-5344 is a O-Ring, manufactured by Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-422-5344 has 1 manufacturer part number on file: P691 (Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace).
Key specifications for P691: Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Special Features: 1/16 BY 1-1/8 BY 1-1/4 IN IN; End Item Identification: USED ON G685B-S SPLIT HYDROSHIFT RIVET INSTALLATION TOOL. 1 specification is 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.