The O-Ring, cataloged under National Stock Number 5331-01-508-1728, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-508-1728 |
| Primary Part Number | 031325-011-VI |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 031325-011-VI PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV279731-1 ITEM 29 | Automatic Switch Company Dba Asco (USA) |
| Reference | Meaning |
|---|---|
| 031325-011-V1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-508-1728 is a O-Ring, manufactured by Automatic Switch Company Dba Asco, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-508-1728 has 2 manufacturer part numbers on file: 031325-011-VI (Automatic Switch Company Dba Asco), AV279731-1 ITEM 29 (Automatic Switch Company Dba Asco).
Key specifications for 031325-011-VI: Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Part Name Assigned by Controlling Agency: O-RING DISC; End Item Identification: VALVE SOLENOID; Material: RUBBER FLUOROCARBON CLASS FPM. 2 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.