PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6303Seal,plain Encased

Federal-Mogul Corp Government Sales Dept · NSN 5330-00-737-5028 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-737-5028 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-737-5028. Primary manufacturer part number: 6303.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 2.439 INCHES MINIMUM AND 2.443 INCHES MAXIMUM IN
  • Seal Width: 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
  • Sealing Element Style: ANGULAR
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Accommodated Shaft Diameter: 1.750 INCHES NOMINAL IN
  • Material: STEEL CASE
  • Case Style: SQUARE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-737-5028, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal-Mogul Corp Government Sales Dept. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-737-5028
Primary Part Number6303
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerFederal-Mogul Corp Government Sales Dept
StatusCANCELLED
Housing Bore Diameter2.439 INCHES MINIMUM AND 2.443 INCHES MAXIMUM IN
Seal Width0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
Sealing Element StyleANGULAR
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Accommodated Shaft Diameter1.750 INCHES NOMINAL IN
MaterialSTEEL CASE
Case StyleSQUARE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5945-00-257-774126203-2 INTERCHANGEABLE
Relay,electromagnetic
Raytheon Company Dba Raytheon
4730-00-270-3886 INTERCHANGEABLE
Nut,slip Joint
3110-00-293-93020042980-3 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
5960-00-503-0254 INTERCHANGEABLE
Electron Tube
5999-00-552-4389103 INTERCHANGEABLE
Clip,electrical
Zierick Mfg Corp
3110-00-554-3238 INTERCHANGEABLE
Bearing,ball,annular
5120-00-595-9570 INTERCHANGEABLE
Step Plate,mechanical Puller
5950-00-688-60299155439 INTERCHANGEABLE
Transformer,power Autotransforme
Us Army Aviation and Missile Command
5950-00-739-78352006594 INTERCHANGEABLE
Transformer,power Autotransforme
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5960-00-804-09546303 INTERCHANGEABLE
Electron Tube
Richardson Electronics, Ltd.
Cross-Reference Index
Part NumberManufacturer
647468 Am General Llc (USA)
43-1446 Federal-Mogul Corp Government Sales Dept (USA)
6303S Federal-Mogul Corp Government Sales Dept (USA)
643839 Am General Llc (USA)
15485A Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
7375028 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
49575 Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
643839 Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
6303 PRIMARY Federal-Mogul Corp Government Sales Dept (USA)
647468 General Motors Corp (USA)
Related Parts
5945-00-257-7741INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
26203-2
4730-00-270-3886INTERCHANGEABLE
NUT,SLIP JOINT
3110-00-293-9302INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042980-3
5960-00-503-0254INTERCHANGEABLE
ELECTRON TUBE
5999-00-552-4389INTERCHANGEABLE
CLIP,ELECTRICAL
103
3110-00-554-3238INTERCHANGEABLE
BEARING,BALL,ANNULAR
5120-00-595-9570INTERCHANGEABLE
STEP PLATE,MECHANICAL PULLER
5950-00-688-6029INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
9155439
5950-00-739-7835INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
2006594
5960-00-804-0954INTERCHANGEABLE
ELECTRON TUBE
6303
5962-01-052-6181INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SNJ54S00J
6130-01-080-5491INTERCHANGEABLE
POWER SUPPLY

Frequently Asked Questions

What is NSN 5330-00-737-5028?

NSN 5330-00-737-5028 is a Seal,plain Encased, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-737-5028?

NSN 5330-00-737-5028 has 10 cross-referenced part numbers: 647468 (Am General Llc), 43-1446 (Federal-Mogul Corp Government Sales Dept), 6303S (Federal-Mogul Corp Government Sales Dept), 643839 (Am General Llc), 15485A (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions) and 5 more.

What NSN replaces 5330-00-737-5028?

There are 12 known substitutes for 5330-00-737-5028: 5945-00-257-7741, 4730-00-270-3886, 3110-00-293-9302 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6303?

Key specifications for 6303: Housing Bore Diameter: 2.439 INCHES MINIMUM AND 2.443 INCHES MAXIMUM IN; Seal Width: 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR; Material: RUBBER SYNTHETIC SEALING ELEMENT. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-737-5028 still in active supply?

NSN 5330-00-737-5028 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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