The Ring Assembly, cataloged under National Stock Number 1650-01-026-3891, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1650-01-026-3891 |
| Primary Part Number | S30079 |
| Item Name | Ring Assembly |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | S13043-1 PISTON RING 2 EA,S12045-56 EXPANDER 1 EA |
| 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 |
|---|---|
| S30079 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S30079 | 5/9 Secondary reference U.S. Government activity |
NSN 1650-01-026-3891 is a Ring Assembly, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-026-3891 has 1 manufacturer part number on file: S30079 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S30079: General Characteristics Item Description: S13043-1 PISTON RING 2 EA,S12045-56 EXPANDER 1 EA; End Item Identification: ACFT MODEL NO.E3A. 1 specification is 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.