The O-Ring, cataloged under National Stock Number 5331-01-526-3500, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Pospisil Graziano and Associates Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-526-3500 |
| Primary Part Number | 843-08064-006 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Pospisil Graziano and Associates Inc |
| 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 |
|---|---|
| 843-08064-006 PRIMARY | Pospisil Graziano and Associates Inc (USA) |
| Reference | Meaning |
|---|---|
| 10540578 | 5/9 Secondary reference Memtec America Corp Filterite Sales Div |
NSN 5331-01-526-3500 is a O-Ring, manufactured by Pospisil Graziano and Associates Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-526-3500 has 1 manufacturer part number on file: 843-08064-006 (Pospisil Graziano and Associates Inc).
Key specifications for 843-08064-006: End Item Identification: TACTICAL WATER PURIFICATION SYSTEM (TWPS) NSN 4610-01-488-9656. 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.