The Seal,plain Encased, cataloged under National Stock Number 5330-01-593-9631, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is A W Chesterton Co Div Sealing Device Division. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5330-01-593-9631 |
| Primary Part Number | 218700 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | A W Chesterton Co Div Sealing Device Division |
| Status | ACTIVE |
| Sealing Element Style | VERTICAL |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 5.500 INCHES NOMINAL IN |
| Material | STEEL COMP 316 OUTER RING |
| Material | PLASTIC FLUORINATED ETHYLENE PROPYLENE SEALING ELEMENT |
| 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 |
|---|---|
| 218700 PRIMARY | A W Chesterton Co Div Sealing Device Division (USA) |
| Reference | Meaning |
|---|---|
| 218700 | 5/9 Secondary reference Chesterton a W Co Technical Products Div |
NSN 5330-01-593-9631 is a Seal,plain Encased, manufactured by A W Chesterton Co Div Sealing Device Division, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-593-9631 has 1 manufacturer part number on file: 218700 (A W Chesterton Co Div Sealing Device Division).
Key specifications for 218700: Sealing Element Style: VERTICAL; Case Style: SQUARE; Special Features: USED IN CONJUNCTION WITH THE MECHANICAL SEAL TO ALLOW IN -PLACE REPAIRS OF THE MECHANICAL SEAL. NOT TO BE INFLATED WHEN SHAFT IS ROTATING.; Accommodated Shaft Diameter: 5.500 INCHES NOMINAL 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.