PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

640959Seal,plain Encased

Am General Llc · NSN 5330-00-737-4988 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-737-4988 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-737-4988. Primary manufacturer part number: 640959.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 1.375 INCHES NOMINAL IN
  • Accommodated Shaft Diameter: 2.250 INCHES NOMINAL IN
  • Sealing Element Style: ANGULAR
  • Outside Diameter: 2.286 INCHES NOMINAL IN
  • Surface Treatment: PLASTIC CASE
  • Material: STEEL CASE
  • Material: LEATHER SEALING ELEMENT
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Case construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-737-4988, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Am General Llc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-737-4988
Primary Part Number640959
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerAm General Llc
StatusACTIVE
Housing Bore Diameter1.375 INCHES NOMINAL IN
Accommodated Shaft Diameter2.250 INCHES NOMINAL IN
Sealing Element StyleANGULAR
Outside Diameter2.286 INCHES NOMINAL IN
Surface TreatmentPLASTIC CASE
MaterialSTEEL CASE
MaterialLEATHER SEALING ELEMENT
Case StyleRECESSED
Seal Width0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-020-9224 INTERCHANGEABLE
Coil,radio Frequency
5360-00-359-8658 INTERCHANGEABLE
Spring,tension
5330-00-407-2592 INTERCHANGEABLE
Packing Assortment,preformed
6630-00-566-7822 INTERCHANGEABLE
Analyzer,gas
6610-00-779-6932 INTERCHANGEABLE
Shaft,compensating
5960-00-814-2141 INTERCHANGEABLE
Electron Tube
8135-00-985-7242 INTERCHANGEABLE
Paper,volatile Corrosion Inhibit
8030-01-014-586924231 INTERCHANGEABLE
Sealing Compound
Loctite Corp
4720-01-017-443813710 INTERCHANGEABLE
Hose Assembly
Paccar Winch Inc Dba Paccar Winch Division
3455-01-046-7775 INTERCHANGEABLE
File,rotary
Cross-Reference Index
Part NumberManufacturer
15969-3 Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA)
112228I Michigan Leather Products Co (USA)
640959 PRIMARY Am General Llc (USA)
7374988 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
7242 Federal-Mogul Corp Government Sales Dept (USA)
13710 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
9437A Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
15969-4 Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA)
2530007374988 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
Related Parts
5950-00-020-9224INTERCHANGEABLE
COIL,RADIO FREQUENCY
5360-00-359-8658INTERCHANGEABLE
SPRING,TENSION
5330-00-407-2592INTERCHANGEABLE
PACKING ASSORTMENT,PREFORMED
6630-00-566-7822INTERCHANGEABLE
ANALYZER,GAS
6610-00-779-6932INTERCHANGEABLE
SHAFT,COMPENSATING
5960-00-814-2141INTERCHANGEABLE
ELECTRON TUBE
8135-00-985-7242INTERCHANGEABLE
PAPER,VOLATILE CORROSION INHIBIT
8030-01-014-5869INTERCHANGEABLE
SEALING COMPOUND
24231
4720-01-017-4438INTERCHANGEABLE
HOSE ASSEMBLY
13710
3455-01-046-7775INTERCHANGEABLE
FILE,ROTARY
6650-01-057-3949INTERCHANGEABLE
MONOCHROMATOR
7242
4920-01-109-0896INTERCHANGEABLE
TEST UNIT,SYNCHRO
13710

Frequently Asked Questions

What is NSN 5330-00-737-4988?

NSN 5330-00-737-4988 is a Seal,plain Encased, manufactured by Am General Llc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-737-4988?

NSN 5330-00-737-4988 has 9 cross-referenced part numbers: 15969-3 (Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products), 112228I (Michigan Leather Products Co), 640959 (Am General Llc), 7374988 (U S Army Tank Automotive Command Amsta-Im-Mm), 7242 (Federal-Mogul Corp Government Sales Dept) and 4 more.

What NSN replaces 5330-00-737-4988?

There are 12 known substitutes for 5330-00-737-4988: 5950-00-020-9224, 5360-00-359-8658, 5330-00-407-2592 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 640959?

Key specifications for 640959: Housing Bore Diameter: 1.375 INCHES NOMINAL IN; Accommodated Shaft Diameter: 2.250 INCHES NOMINAL IN; Sealing Element Style: ANGULAR; Outside Diameter: 2.286 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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