The Retainer,packing, cataloged under National Stock Number 5330-01-067-0322, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Cunico Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-067-0322 |
| Primary Part Number | 18-620 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Cunico Corporation |
| Status | ACTIVE |
| Cross-Sectional Height | 0.530 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN |
| Body Recess Diameter | 3.680 INCHES MINIMUM AND 3.685 INCHES MAXIMUM IN |
| Peripheral Diameter | 4.183 INCHES MINIMUM AND 4.185 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.495 INCHES MINIMUM AND 3.505 INCHES MAXIMUM IN |
| Material | PLASTIC POLYAMIDE NYLON AND GRAPHITE OVERALL |
| 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 |
|---|---|
| 18-620 PRIMARY | Cunico Corporation (USA) |
| DD-1876 PIECE 5 | Cunico Corporation (USA) |
| Reference | Meaning |
|---|---|
| BB-1918 | 5/9 Secondary reference Cunico Corporation |
NSN 5330-01-067-0322 is a Retainer,packing, manufactured by Cunico Corporation, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-067-0322 has 2 manufacturer part numbers on file: 18-620 (Cunico Corporation), DD-1876 PIECE 5 (Cunico Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 6532-01-283-4497, 5120-01-646-7767. Verify interchangeability with system specifications before substitution.
Key specifications for 18-620: Cross-Sectional Height: 0.530 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN; Body Recess Diameter: 3.680 INCHES MINIMUM AND 3.685 INCHES MAXIMUM IN; Peripheral Diameter: 4.183 INCHES MINIMUM AND 4.185 INCHES MAXIMUM IN; Center Hole Diameter: 3.495 INCHES MINIMUM AND 3.505 INCHES MAXIMUM IN. 5 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.