The O-Ring, cataloged under National Stock Number 5331-01-445-9142, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Admiral Filter Company Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Admiral Filter Company Llc (CAGE 25204) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-445-9142 |
| Primary Part Number | AS568-140 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Admiral Filter Company Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| AS568-140 PRIMARY | Admiral Filter Company Llc (USA) |
| 690352 ITEM 4 PRIMARY | Admiral Filter Company Llc (USA) |
| Reference | Meaning |
|---|---|
| MMD-2066 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-445-9142 is a O-Ring, manufactured by Admiral Filter Company Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-445-9142 has 2 manufacturer part numbers on file: AS568-140 (Admiral Filter Company Llc), 690352 ITEM 4 (Admiral Filter Company Llc).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-548-2943. Verify interchangeability with system specifications before substitution.
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.