The O-Ring, cataloged under National Stock Number 5331-01-581-3969, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sos Marine Case Investments Pty Ltd. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-581-3969 |
| Primary Part Number | SOS-5100-21PK |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sos Marine Case Investments Pty Ltd |
| Status | ACTIVE |
| 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 |
|---|---|
| SOS-5100-21PK | Sos Marine Case Investments Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| V90113PK | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-581-3969 is a O-Ring, manufactured by Sos Marine Case Investments Pty Ltd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-581-3969 has 1 manufacturer part number on file: SOS-5100-21PK (Sos Marine Case Investments Pty Ltd).
Key specifications for SOS-5100-21PK: Part Name Assigned by Controlling Agency: O-RING; End Item Identification: GASKET. 0 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.