The Backup Ring,aircraf, cataloged under National Stock Number 5330-01-513-9040, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Hydraulics International 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Backup Ring,aircraf |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Hydraulics International Inc (CAGE 1VCN7) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-513-9040 |
| Primary Part Number | MS28774-018 |
| Item Name | Backup Ring,aircraf |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Hydraulics International Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| MS28774-018 PRIMARY | Hydraulics International Inc (USA) |
| Reference | Meaning |
|---|---|
| 5330PL2046156 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5330-01-513-9040 is a Backup Ring,aircraf, manufactured by Hydraulics International Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-513-9040 has 1 manufacturer part number on file: MS28774-018 (Hydraulics International Inc).
Possible hazard — SDS may be required (DLA HMIC P). 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.