The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-548-3658, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-548-3658 |
| Primary Part Number | G547-0002-264277101-032CP |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| G547-0002-264277101-032CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 54-94-8227CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 2642-771-01 ITEM 32CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-264277101-032CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 264277101-032CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-4687566 ITEM 32CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 264277101-032 | 5/1 Secondary reference U.S. Government activity |
| 7550478-264277101-032 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 54-94-8227 | 5/1 Secondary reference U.S. Government activity |
| 845-4687566 ITEM 32 | 5/1 Secondary reference U.S. Government activity |
| G547-0002-264277101-032 | 5/1 Secondary reference U.S. Government activity |
| 2642-771-01 ITEM 32 | 5/1 Secondary reference U.S. Government activity |
NSN 5330-01-548-3658 is a Back-Up Ring,preformed Packing, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-548-3658 has 6 manufacturer part numbers on file: G547-0002-264277101-032CP (Naval Inventory Control Point Mechanicsburg), 54-94-8227CP (Naval Inventory Control Point Mechanicsburg), 2642-771-01 ITEM 32CP (Naval Inventory Control Point Mechanicsburg), 7550478-264277101-032CP (Naval Inventory Control Point Mechanicsburg), 264277101-032CP (Naval Inventory Control Point Mechanicsburg) and 1 more.
Key specifications for G547-0002-264277101-032CP: Criticality Code Justification: ZZZY; End Item Identification: VALVE,BALL,0.5 IN IN; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 2 specifications are documented in the U.S. Government catalog.
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.