PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5521Seal,plain Encased

Eaton Corp Transmission Div · NSN 5330-00-290-1168 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-290-1168 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-290-1168. Primary manufacturer part number: 5521.
Features
  • Seal,plain Encased — FSC 5330
  • Seal Width: 0.437 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Case Style: SQUARE
  • Accommodated Shaft Diameter: 2.500 INCHES NOMINAL IN
  • Housing Bore Diameter: 3.350 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC SEALING ELEMENT B
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Material: LEATHER SEALING ELEMENT A
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic Sealing Element B construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-290-1168, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Corp Transmission Div. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 11 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
NSN5330-00-290-1168
Primary Part Number5521
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerEaton Corp Transmission Div
StatusACTIVE
Seal Width0.437 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Case StyleSQUARE
Accommodated Shaft Diameter2.500 INCHES NOMINAL IN
Housing Bore Diameter3.350 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT B
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
MaterialLEATHER SEALING ELEMENT A
Sealing Element StyleANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-051-8748325-62-250SH INTERCHANGEABLE
Clamp,hose
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
3110-00-100-04962X627B INTERCHANGEABLE
Cup,tapered Roller Bearing
Napco International Llc Dba Napco International Inc
5975-00-100-8759 INTERCHANGEABLE
Box Connector,electrical
3020-00-141-2304 INTERCHANGEABLE
Gear,spur
3110-00-155-6706 INTERCHANGEABLE
Bearing,ball,annular
5950-00-240-4581SCB34260 INTERCHANGEABLE
Transformer,discriminator
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-00-254-62110716-MM5-BB02 INTERCHANGEABLE
Elbow,pipe to Tube
The Shyft Group Usa, Inc Dba the Shyft Group Usa, Inc
4820-00-389-8491111307 INTERCHANGEABLE
Disk,valve
Northrop Grumman Systems Corporation Div Marine Systems
5962-00-469-47615521 INTERCHANGEABLE
Microcircuit,linear
Satcon Electronics Custom Hybrid Products Div
5935-00-502-6234552-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
Cross-Reference Index
Part NumberManufacturer
50496 Federal-Mogul Corp Chassis Products Div (USA)
43-868 Federal-Mogul Corp Chassis Products Div (USA)
43-868 Federal-Mogul Corp Sealing Products Group Van Wert Plant (USA)
5521 PRIMARY Eaton Corp Transmission Div (USA)
A1205X258 PRIMARY Bay City Shovels, Inc (USA)
111307 Terex Corp (USA)
335216 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
A1205X258 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
49263 PRIMARY Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
60913 PRIMARY Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
9111307 PRIMARY General Motors Corp (USA)
A1205X258 Koehring Co Lorain Div (USA)
A1205X258 PRIMARY Meritor Heavy Vehicle Systems, Llc (USA)
9111307 Terex Corp (USA)
Related Parts
4730-00-051-8748INTERCHANGEABLE
CLAMP,HOSE
325-62-250SH
3110-00-100-0496INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
2X627B
5975-00-100-8759INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
3020-00-141-2304INTERCHANGEABLE
GEAR,SPUR
3110-00-155-6706INTERCHANGEABLE
BEARING,BALL,ANNULAR
5950-00-240-4581INTERCHANGEABLE
TRANSFORMER,DISCRIMINATOR
SCB34260
4730-00-254-6211INTERCHANGEABLE
ELBOW,PIPE TO TUBE
0716-MM5-BB02
4820-00-389-8491INTERCHANGEABLE
DISK,VALVE
111307
5962-00-469-4761INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5521
5935-00-502-6234INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
552-1
2920-00-594-2415INTERCHANGEABLE
LEAD,IGNITION,ENGINE
55-21
1680-00-608-4804INTERCHANGEABLE
HOUSING,ACTUATOR
111307

Frequently Asked Questions

What is NSN 5330-00-290-1168?

NSN 5330-00-290-1168 is a Seal,plain Encased, manufactured by Eaton Corp Transmission Div, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-290-1168?

NSN 5330-00-290-1168 has 14 cross-referenced part numbers: 50496 (Federal-Mogul Corp Chassis Products Div), 43-868 (Federal-Mogul Corp Chassis Products Div), 43-868 (Federal-Mogul Corp Sealing Products Group Van Wert Plant), 5521 (Eaton Corp Transmission Div), A1205X258 (Bay City Shovels, Inc) and 9 more.

What NSN replaces 5330-00-290-1168?

There are 12 known substitutes for 5330-00-290-1168: 4730-00-051-8748, 3110-00-100-0496, 5975-00-100-8759 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5521?

Key specifications for 5521: Seal Width: 0.437 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Case Style: SQUARE; Accommodated Shaft Diameter: 2.500 INCHES NOMINAL IN; Housing Bore Diameter: 3.350 INCHES NOMINAL IN. 8 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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