NSN 1620-01-419-7915 — this item is cataloged by the U.S. Government under National Stock Number 1620-01-419-7915. Manufacturer of record part number: S4444978-64.
Nearby stock numbers← 1620-01-419-6191 Parts Kit, Seal Replacement, Mecha
·
1620-01-419-7919 Ring, Expander →
Features
Mounting Ring,piston — FSC 1620
2 manufacturer part numbers on file
Manufacturer of record: Trelleborg Sealing Solutions Us, Inc.
Identification
NSN: 1620-01-419-7915
NIIN: 014197915
FSC: 1620 — Aircraft Landing Gear Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: S4444978-64
Manufacturer: Trelleborg Sealing Solutions Us, Inc.
General Description
The Mounting Ring,piston, cataloged under National Stock Number 1620-01-419-7915, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories 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. Current acquisition status: Active.
Other items in FSC 1620 — Aircraft Landing Gear Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1620-00-001-2466
HOUSING,GEARBOX,KNE
1620-00-001-2467
HOUSING,GEARBOX,KNE
1620-00-001-2468
1620-00-001-2468 · Item name not on file
1620-00-001-3929
LEVER ASSEMBLY
1620-00-001-4483
CYLINDER LANDING GE
1620-00-001-6577
1620-00-001-6577 · Item name not on file
1620-00-001-6942
END PLATE,POWER ST
1620-00-003-0391
DRAG BRACE,LANDING GEAR
Frequently Asked Questions
What is NSN 1620-01-419-7915?
NSN 1620-01-419-7915 is a Mounting Ring,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
What part numbers are listed for NSN 1620-01-419-7915?
NSN 1620-01-419-7915 has 2 manufacturer part numbers on file: S4444978-64 (Trelleborg Sealing Solutions Us, Inc.), S4444978-64 (Proponent, Inc. Dba Proponent).
What are the specifications of S4444978-64?
Key specifications for S4444978-64: End Item Identification: C-17A ACFT A. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1620-01-419-7915 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 1620-01-419-7915?
NSN 1620-01-419-7915 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.