The Seal,plain Encased, cataloged under National Stock Number 5330-00-280-4138, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-280-4138 |
| Primary Part Number | 254246-1 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Vanseal Corp |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF |
| Seal Width | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Sealing Element Style | ANGULAR |
| Housing Bore Diameter | 1.254 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-250/8 FED SPEC SINGLE MATERIAL RESPONSE CASE |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY CASE |
| Material | RUBBER SILICONE CLASS Q SEALING ELEMENT B |
| 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 |
|---|---|
| 254246-1 | Vanseal Corp (USA) |
| Reference | Meaning |
|---|---|
| 405391 | 5/2 Secondary reference U.S. Government activity |
| 254246-1 | 1/2 Source control — Government-approved source U.S. Government activity |
| 254246-1 | 5/2 Secondary reference U.S. Government activity |
| 526754 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5330-00-280-4138 is a Seal,plain Encased, manufactured by Vanseal Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-280-4138 has 1 manufacturer part number on file: 254246-1 (Vanseal Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5315-00-741-4438, 5950-01-103-5819. Verify interchangeability with system specifications before substitution.
Key specifications for 254246-1: Temp Rating: -65.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF; Seal Width: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR; Housing Bore Diameter: 1.254 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN. 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.