The Ring,piston, cataloged under National Stock Number 2805-01-140-3811, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-140-3811 |
| Primary Part Number | S32740-140-5 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S32740-140-5 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| 9190-140 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| S32740-140-5 | 5/9 Secondary reference U.S. Government activity |
| 10106390 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 9190-140 | C/1 Advisory reference — outside the item-of-supply concept Woodward Hrt, Inc. Dba Woodward Hrt Inc |
| 9190-140 | 5/9 Secondary reference U.S. Government activity |
NSN 2805-01-140-3811 is a Ring,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-140-3811 has 2 manufacturer part numbers on file: S32740-140-5 (Trelleborg Sealing Solutions Us, Inc.), 9190-140 (Tactair Fluid Controls Inc).
Key specifications for S32740-140-5: End Item Identification: ACFT MODEL F-18. 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.
NSN 2805-01-140-3811 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.