The Retainer,packing, cataloged under National Stock Number 5330-01-218-4933, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-218-4933 |
| Primary Part Number | S52028-338 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.85 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | SQUARE |
| Peripheral Diameter | 88.8 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 79.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| RE0022358 | Alfariver Defense S.l (ESP) |
| S52028-338 | Satair A/s (DNK) |
| S52028-338 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10078540 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| S52028-338 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5330-01-218-4933 is a Retainer,packing, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-218-4933 has 3 manufacturer part numbers on file: RE0022358 (Alfariver Defense S.l), S52028-338 (Satair A/s), S52028-338 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S52028-338: Cross-Sectional Thickness: 0.85 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: SQUARE; Peripheral Diameter: 88.8 MILLIMETERS NOMINAL MM; Center Hole Diameter: 79.0 MILLIMETERS NOMINAL MM. 4 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.