PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21024Seal,nonmetallic Round Section

Elder Rubber Incorporated Dba Porter Seal Company · NSN 5330-00-308-0827 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-308-0827 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-308-0827. Primary manufacturer part number: 21024.
Features
  • Seal,nonmetallic Round Section — FSC 5330
  • Aperture Width: 5.800 INCHES MINIMUM AND 5.830 INCHES MAXIMUM IN
  • Outside Corner Radius: 0.137 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: CIRCULAR
  • Style Designator: NON-CIRCULAR
  • Cross Section Outside Diameter: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Aperture Length: 7.300 INCHES MINIMUM AND 7.330 INCHES MAXIMUM IN
  • Construction: SOLID
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,nonmetallic Round Section, cataloged under National Stock Number 5330-00-308-0827, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Elder Rubber Incorporated Dba Porter Seal Company. Government technical data includes 9 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
NSN5330-00-308-0827
Primary Part Number21024
Item NameSeal,nonmetallic Round Section
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerElder Rubber Incorporated Dba Porter Seal Company
StatusACTIVE
Aperture Width5.800 INCHES MINIMUM AND 5.830 INCHES MAXIMUM IN
Outside Corner Radius0.137 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
Cross-Sectional Shape StyleCIRCULAR
Style DesignatorNON-CIRCULAR
Cross Section Outside Diameter0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Aperture Length7.300 INCHES MINIMUM AND 7.330 INCHES MAXIMUM IN
ConstructionSOLID
Fabrication MethodSOLID
Inside Corner Radius0.070 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5940-00-177-7973 INTERCHANGEABLE
Terminal,lug
5110-00-222-452211 INTERCHANGEABLE
Cutter,circle
General Tools Manufacturing Co., Llc.
5330-00-291-4013 INTERCHANGEABLE
Gasket
5360-00-323-1425 INTERCHANGEABLE
Spring,helical,compression
5950-00-645-365721024 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
4730-00-908-3193 INTERCHANGEABLE
Clamp,hose
5340-01-032-306121024 INTERCHANGEABLE
Plug,vent
Rogerson Aircraft Equipment Group
5120-01-122-295621-024 INTERCHANGEABLE
Compressor,spring
Bosch Automotive Service Solutions Ltd
4730-01-127-0340 INTERCHANGEABLE
Sleeve,twin
4720-01-152-266821024 INTERCHANGEABLE
Hose Assembly,nonmetallic
Ritchie Engineering Co Inc
Cross-Reference Index
Part NumberManufacturer
21024 Porter Seal Co (USA)
21024-00 L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West (USA)
21024 PRIMARY Elder Rubber Incorporated Dba Porter Seal Company (USA)
Related Parts
5940-00-177-7973INTERCHANGEABLE
TERMINAL,LUG
5110-00-222-4522INTERCHANGEABLE
CUTTER,CIRCLE
11
5330-00-291-4013INTERCHANGEABLE
GASKET
5360-00-323-1425INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5950-00-645-3657INTERCHANGEABLE
COIL,RADIO FREQUENCY
21024
4730-00-908-3193INTERCHANGEABLE
CLAMP,HOSE
5340-01-032-3061INTERCHANGEABLE
PLUG,VENT
21024
5120-01-122-2956INTERCHANGEABLE
COMPRESSOR,SPRING
21-024
4730-01-127-0340INTERCHANGEABLE
SLEEVE,TWIN
4720-01-152-2668INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21024
5360-01-190-7217INTERCHANGEABLE
SPRING
WF2-1024
5305-01-339-7396INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5330-00-308-0827?

NSN 5330-00-308-0827 is a Seal,nonmetallic Round Section, manufactured by Elder Rubber Incorporated Dba Porter Seal Company, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-308-0827?

NSN 5330-00-308-0827 has 3 cross-referenced part numbers: 21024 (Porter Seal Co), 21024-00 (L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West), 21024 (Elder Rubber Incorporated Dba Porter Seal Company).

What NSN replaces 5330-00-308-0827?

There are 12 known substitutes for 5330-00-308-0827: 5940-00-177-7973, 5110-00-222-4522, 5330-00-291-4013 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21024?

Key specifications for 21024: Aperture Width: 5.800 INCHES MINIMUM AND 5.830 INCHES MAXIMUM IN; Outside Corner Radius: 0.137 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN; Cross-Sectional Shape Style: CIRCULAR; Style Designator: NON-CIRCULAR. 9 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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