Seal, Plain Encased5330-00-488-6291

NSN 5330-00-488-6291 · NIIN 004886291 · Part number M2518A

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · FSC 5330 — Packing and Gasket Materials · FSG 53 — Hardware and Abrasives · CAGE 61208

Government record, cited

NSN 5330-00-488-6291 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-488-6291. Manufacturer of record part number: M2518A.

Also searched as 5330-00-488-6291 · 5330004886291 · NIIN 004886291 · 00-488-6291 · FSC 5330 Packing and Gasket Materials · CAGE 61208 · M2518A

Nearby stock numbers ← 5330-00-488-6033 · 5330-00-488-6296 Gasket →

5330-00-488-6291 — Packing and Gasket Materials

Features

Seal,plain Encased — FSC 5330
Seal Width: 0.109 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
Sealing Element Style: ANGULAR
Housing Bore Diameter: 0.685 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
Material Document and Classification: 2412 FSCM 96879 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT
Case Style: SQUARE
Accommodated Shaft Diameter: 0.437 INCHES NOMINAL IN
Material: RUBBER SYNTHETIC SEALING ELEMENT

Identification

NSN: 5330-00-488-6291
NIIN: 004886291
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives
Primary part number: M2518A
Manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-488-6291, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 7 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5330-00-488-6291
Primary Part Number	M2518A
Item Name	Seal,plain Encased
FSC / FSG	5330 / 53 — Packing and Gasket Materials
Manufacturer	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Status	ACTIVE
Seal Width	0.109 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
Sealing Element Style	ANGULAR
Housing Bore Diameter	0.685 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
Material Document and Classification	2412 FSCM 96879 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT
Case Style	SQUARE
Accommodated Shaft Diameter	0.437 INCHES NOMINAL IN
Material	RUBBER SYNTHETIC SEALING ELEMENT

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
M2518A PRIMARY	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)

No interchangeability data on file.

Other items in FSC 5330 — Packing and Gasket Materials

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5330-00-000-0085

RETAINER

5330-00-000-0167

PARTS KIT,SEAL REPLACEMENT,MECHA

5330-00-000-5275

5330-00-000-5275 · Item name not on file

5330-00-001-1260

SEAL,NONMETALLIC SPECIAL SHAPED

5330-00-001-1833

SEAL,PLAIN ENCASED

5330-00-001-1844

GLAND,RESERVOIR,INDICATOR END

5330-00-001-1845

5330-00-001-1845 · Item name not on file

5330-00-001-1846

5330-00-001-1846 · Item name not on file

Frequently Asked Questions

What is NSN 5330-00-488-6291?

NSN 5330-00-488-6291 is a Seal,plain Encased, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330, Packing and Gasket Materials. Status: active.

What part numbers are listed for NSN 5330-00-488-6291?

NSN 5330-00-488-6291 has 1 manufacturer part number on file: M2518A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What are the specifications of M2518A?

Key specifications for M2518A: Seal Width: 0.109 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR; Housing Bore Diameter: 0.685 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN; Material Document and Classification: 2412 FSCM 96879 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5330-00-488-6291 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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