The Seal,plain Encased, cataloged under National Stock Number 5330-01-053-2900, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Vanseal Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-053-2900 |
| Primary Part Number | 5900981 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Vanseal Corp |
| Status | ACTIVE |
| Attachment Feature Quantity | 2 |
| Seal Width | 0.751 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Attachment Feature Length | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Sealing Element Style | VERTICAL-ANGULAR |
| Attachment Feature Width | 0.161 INCHES NOMINAL IN |
| Case Style | RECESSED |
| Accommodated Shaft Diameter | 0.428 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN |
| Material | STEEL COMP 4017 CASE |
| Attachment Method | SLOT |
| 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 |
|---|---|
| 5900981 PRIMARY | Vanseal Corp (USA) |
| Reference | Meaning |
|---|---|
| 5900981 | 5/9 Secondary reference John Crane, Inc |
| 5900981 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5330-01-053-2900 is a Seal,plain Encased, manufactured by Vanseal Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-053-2900 has 1 manufacturer part number on file: 5900981 (Vanseal Corp).
Key specifications for 5900981: Attachment Feature Quantity: 2; Seal Width: 0.751 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; Attachment Feature Length: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN; Sealing Element Style: VERTICAL-ANGULAR. 9 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.