The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-563-5027, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Arcos Hydraulik Aktiebolag. The record lists 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-563-5027 |
| Primary Part Number | 2-306539 POS 46 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Arcos Hydraulik Aktiebolag |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2-306539 POS 46 | Arcos Hydraulik Aktiebolag (SWE) |
| 900273 | Arcos Hydraulik Aktiebolag (SWE) |
| SH-5529 80/50-0900 POS 46 | Arcos Hydraulik Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| CR STR 75X80X1.3-Y95A | 3/2 Design control — primary reference U.S. Government activity |
| 900273 | 5/9 Secondary reference Pmc Cylinders Ab - Ca-Verken Ab |
| SH-5529 80/50-0900 POS 46 | 5/9 Secondary reference Pmc Cylinders Ab - Ca-Verken Ab |
| 2-306539 POS 46 | 5/9 Secondary reference Pmc Cylinders Ab - Ca-Verken Ab |
NSN 5330-01-563-5027 is a Back-Up Ring,preformed Packing, manufactured by Arcos Hydraulik Aktiebolag, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-563-5027 has 3 manufacturer part numbers on file: 2-306539 POS 46 (Arcos Hydraulik Aktiebolag), 900273 (Arcos Hydraulik Aktiebolag), SH-5529 80/50-0900 POS 46 (Arcos Hydraulik Aktiebolag).
Key specifications for 2-306539 POS 46: Special Features: NHA: CYLINDER,HYDRAULIC 6505529-0900; End Item Identification: NEW CONSTRUCTION LSC1. 0 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.