PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40520ASeal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-00-294-0799 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-294-0799 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-294-0799. Primary manufacturer part number: 40520A.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: SQUARE
  • Housing Bore Diameter: 1.828 INCHES NOMINAL IN
  • Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN
  • Seal Width: 0.438 INCHES NOMINAL IN
  • Sealing Element Style: ANGULAR
  • 6 verified cross-references
  • Primary manufacturer: Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-294-0799, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Skf Usa Inc. Dba Skf Aerospace Sealing Solutions. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-294-0799
Primary Part Number40520A
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusCANCELLED
Case StyleSQUARE
Housing Bore Diameter1.828 INCHES NOMINAL IN
Accommodated Shaft Diameter1.125 INCHES NOMINAL IN
Seal Width0.438 INCHES NOMINAL IN
Sealing Element StyleANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3110-00-120-437111193 INTERCHANGEABLE
Bearing,roller,needle
Hyster-Yale Group, Inc.
2530-00-353-0408220353 INTERCHANGEABLE
Valve,relay,air Pressure
Crane Co Div Valve Div
2910-00-358-45160-11193 INTERCHANGEABLE
Carburetor,float
Zenith Fuel Systems Llc
2590-00-371-3137450029 INTERCHANGEABLE
Parts Kit,horn Button Switch
Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
5950-00-626-944911193 INTERCHANGEABLE
Transformer,power
Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace
6520-01-113-474511193 INTERCHANGEABLE
Cover,dental Instrument Tray
L & R Manufacturing Company
3040-01-203-1194656C0224J030A INTERCHANGEABLE
Shaft,shouldered
Circor Naval Solutions Llc Dba Warren Pumps
5315-01-292-96238301440 INTERCHANGEABLE
Pin,straight,headed
Jlg Industries, Inc.
6540-01-493-793811193 INTERCHANGEABLE
Slide,duochrome
Lombart Brothers, Inc.
6530-01-573-4658ISBP-ACU INTERCHANGEABLE
Back Panel Insert System
S.o. Tech/special Operations Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
40520A PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
581646R91 Navistar International Corporation Dba Navistar (USA)
581646R91 International Harvester Co Agricultural Equipment Div (USA)
581646R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
11193 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
450045 Federal-Mogul Corp Chassis Products Div (USA)
Related Parts
3110-00-120-4371INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
11193
2530-00-353-0408INTERCHANGEABLE
VALVE,RELAY,AIR PRESSURE
220353
2910-00-358-4516INTERCHANGEABLE
CARBURETOR,FLOAT
0-11193
2590-00-371-3137INTERCHANGEABLE
PARTS KIT,HORN BUTTON SWITCH
450029
5950-00-626-9449INTERCHANGEABLE
TRANSFORMER,POWER
11193
6520-01-113-4745INTERCHANGEABLE
COVER,DENTAL INSTRUMENT TRAY
11193
3040-01-203-1194INTERCHANGEABLE
SHAFT,SHOULDERED
656C0224J030A
5315-01-292-9623INTERCHANGEABLE
PIN,STRAIGHT,HEADED
8301440
6540-01-493-7938INTERCHANGEABLE
SLIDE,DUOCHROME
11193
6530-01-573-4658INTERCHANGEABLE
BACK PANEL INSERT SYSTEM
ISBP-ACU

Frequently Asked Questions

What is NSN 5330-00-294-0799?

NSN 5330-00-294-0799 is a Seal,plain Encased, manufactured by Skf Usa Inc. Dba Skf Aerospace Sealing Solutions, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-294-0799?

NSN 5330-00-294-0799 has 6 cross-referenced part numbers: 40520A (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 581646R91 (Navistar International Corporation Dba Navistar), 581646R91 (International Harvester Co Agricultural Equipment Div), 581646R91 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 11193 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions) and 1 more.

What NSN replaces 5330-00-294-0799?

There are 10 known substitutes for 5330-00-294-0799: 3110-00-120-4371, 2530-00-353-0408, 2910-00-358-4516 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40520A?

Key specifications for 40520A: Case Style: SQUARE; Housing Bore Diameter: 1.828 INCHES NOMINAL IN; Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN; Seal Width: 0.438 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-294-0799 still in active supply?

NSN 5330-00-294-0799 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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