PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8457Seal,plain Encased

Eaton Corp Transmission Div · NSN 5330-00-920-3490 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-920-3490 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-920-3490. Primary manufacturer part number: 8457.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 4.504 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN
  • Case Style: SQUARE
  • Sealing Element Style: VERTICAL-ANGULAR
  • Material: WOOL OR RUBBER SYNTHETIC SEALING ELEMENT A
  • Surface Treatment: PASSIVATE CASE
  • Seal Width: 0.875 INCHES NOMINAL IN
  • Accommodated Shaft Diameter: 3.250 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Wool or Rubber Synthetic Sealing Element a construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-920-3490, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-920-3490
Primary Part Number8457
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerEaton Corp Transmission Div
StatusACTIVE
Housing Bore Diameter4.504 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN
Case StyleSQUARE
Sealing Element StyleVERTICAL-ANGULAR
MaterialWOOL OR RUBBER SYNTHETIC SEALING ELEMENT A
Surface TreatmentPASSIVATE CASE
Seal Width0.875 INCHES NOMINAL IN
Accommodated Shaft Diameter3.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5815-00-125-34148457 INTERCHANGEABLE
Bar,pull,teletypewriter
Telemechanics Inc
1660-00-433-33868457 INTERCHANGEABLE
Body,valve
Essex Industries, Inc. Dba Essex Industries
6145-00-498-0851IMB8457 INTERCHANGEABLE
Cable,special Purpose,electrical
Ims New Hampshire
3010-01-190-98088457 INTERCHANGEABLE
Clutch,plate,searchlight
Carlisle & Finch Co
Cross-Reference Index
Part NumberManufacturer
8457 Eaton Corp Transmission Div (USA)
Related Parts
5815-00-125-3414INTERCHANGEABLE
BAR,PULL,TELETYPEWRITER
8457
1660-00-433-3386INTERCHANGEABLE
BODY,VALVE
8457
6145-00-498-0851INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
IMB8457
3010-01-190-9808INTERCHANGEABLE
CLUTCH,PLATE,SEARCHLIGHT
8457

Frequently Asked Questions

What is NSN 5330-00-920-3490?

NSN 5330-00-920-3490 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 5330-00-920-3490?

NSN 5330-00-920-3490 has 1 cross-referenced part number: 8457 (Eaton Corp Transmission Div).

What NSN replaces 5330-00-920-3490?

There are 4 known substitutes for 5330-00-920-3490: 5815-00-125-3414, 1660-00-433-3386, 6145-00-498-0851 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8457?

Key specifications for 8457: Housing Bore Diameter: 4.504 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN; Case Style: SQUARE; Sealing Element Style: VERTICAL-ANGULAR; Material: WOOL OR RUBBER SYNTHETIC SEALING ELEMENT A. 7 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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