PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

579Seal,nonmetallic Round Section

Whittaker Corp Whittaker Electronic Systems Div · NSN 5330-00-850-1558 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-850-1558 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-850-1558. Primary manufacturer part number: 579.
Features
  • Seal,nonmetallic Round Section — FSC 5330
  • Material Document and Classification: 675 FSCM 71984 MFR REF SINGLE MATERIAL RESPONSE OVERALL
  • Outside Corner Radius: 0.469 INCHES NOMINAL IN
  • Inside Corner Radius: 0.312 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: CIRCULAR
  • Style Designator: NON-CIRCULAR
  • Material: RUBBER SILICONE CLASS Q OVERALL
  • Cross Section Outside Diameter: 0.125 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Silicone Class Q Overall construction
General Description

The Seal,nonmetallic Round Section, cataloged under National Stock Number 5330-00-850-1558, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Whittaker Corp Whittaker Electronic Systems Div. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5330-00-850-1558
Primary Part Number579
Item NameSeal,nonmetallic Round Section
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerWhittaker Corp Whittaker Electronic Systems Div
StatusACTIVE
Material Document and Classification675 FSCM 71984 MFR REF SINGLE MATERIAL RESPONSE OVERALL
Outside Corner Radius0.469 INCHES NOMINAL IN
Inside Corner Radius0.312 INCHES NOMINAL IN
Cross-Sectional Shape StyleCIRCULAR
Style DesignatorNON-CIRCULAR
MaterialRUBBER SILICONE CLASS Q OVERALL
Cross Section Outside Diameter0.125 INCHES NOMINAL IN
Aperture Length6.438 INCHES NOMINAL IN
ConstructionSOLID
Fabrication MethodSOLID
Aperture Width3.812 INCHES NOMINAL IN
FSC Application DataRADAR SET,AIRBORNE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6350-00-080-7105579 INTERCHANGEABLE
Bell,electrical
Faraday Llc
2920-00-402-55925-150 INTERCHANGEABLE
Regulator,engine Generator
Motorola Automotive Electronics
3110-00-516-5289203TF INTERCHANGEABLE
Bearing,ball,annular
Fag Bearings Corporation
1005-00-532-3098 INTERCHANGEABLE
Screw,windage Screw
5935-00-539-28545266 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5930-00-954-5872 INTERCHANGEABLE
Switch,push
5962-01-067-74624130011-1 INTERCHANGEABLE
Microcircuit,linear
The Boeing Company Div Defense
2090-01-076-5852579 INTERCHANGEABLE
Separator Assembly,oil and Water
Compass Water Solutions, Inc
5360-01-150-3962 INTERCHANGEABLE
Spring
5120-01-187-3607J33143 INTERCHANGEABLE
Inserter,seal
Bosch Automotive Service Solutions Inc.
Cross-Reference Index
Part NumberManufacturer
579 Whittaker Corp Whittaker Electronic Systems Div (USA)
6230-37 Dow Silicones Corporation (USA)
579 Tectron Corp (USA)
Related Parts
6350-00-080-7105INTERCHANGEABLE
BELL,ELECTRICAL
579
2920-00-402-5592INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
5-150
3110-00-516-5289INTERCHANGEABLE
BEARING,BALL,ANNULAR
203TF
1005-00-532-3098INTERCHANGEABLE
SCREW,WINDAGE SCREW
5935-00-539-2854INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5266
5930-00-954-5872INTERCHANGEABLE
SWITCH,PUSH
5962-01-067-7462INTERCHANGEABLE
MICROCIRCUIT,LINEAR
4130011-1
2090-01-076-5852INTERCHANGEABLE
SEPARATOR ASSEMBLY,OIL AND WATER
579
5360-01-150-3962INTERCHANGEABLE
SPRING
5120-01-187-3607INTERCHANGEABLE
INSERTER,SEAL
J33143
5340-01-200-0902INTERCHANGEABLE
RECEPTACLE,SPECIAL
6230-37
5340-01-201-6317INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
623037

Frequently Asked Questions

What is NSN 5330-00-850-1558?

NSN 5330-00-850-1558 is a Seal,nonmetallic Round Section, manufactured by Whittaker Corp Whittaker Electronic Systems Div, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-850-1558?

NSN 5330-00-850-1558 has 3 cross-referenced part numbers: 579 (Whittaker Corp Whittaker Electronic Systems Div), 6230-37 (Dow Silicones Corporation), 579 (Tectron Corp).

What NSN replaces 5330-00-850-1558?

There are 12 known substitutes for 5330-00-850-1558: 6350-00-080-7105, 2920-00-402-5592, 3110-00-516-5289 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 579?

Key specifications for 579: Material Document and Classification: 675 FSCM 71984 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Outside Corner Radius: 0.469 INCHES NOMINAL IN; Inside Corner Radius: 0.312 INCHES NOMINAL IN; Cross-Sectional Shape Style: CIRCULAR. 12 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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