The O-Ring, cataloged under National Stock Number 5331-01-579-0757, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Nd Defense Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-579-0757 |
| Primary Part Number | 3697586C1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Nd Defense Llc |
| Status | ACTIVE |
| Temp Rating | 150.0 CELSIUS DEGC |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 20.78 MILLIMETERS MINIMUM AND 21.22 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 3697586C1 PRIMARY | Nd Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 518036 | 5/9 Secondary reference Eg and G Automotive Research Inc Sub of Eg and G Inc |
NSN 5331-01-579-0757 is a O-Ring, manufactured by Nd Defense Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-579-0757 has 1 manufacturer part number on file: 3697586C1 (Nd Defense Llc).
Key specifications for 3697586C1: Temp Rating: 150.0 CELSIUS DEGC; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 20.78 MILLIMETERS MINIMUM AND 21.22 MILLIMETERS MAXIMUM MM; Part Name Assigned by Controlling Agency: O-RING,COMPRESSOR. 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.