PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4037Seal,plain Encased

Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division · NSN 5330-00-990-2580 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-990-2580 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-990-2580. Primary manufacturer part number: 4037.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 1.003 INCHES MINIMUM AND 1.007 INCHES MAXIMUM IN
  • Seal Width: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
  • Sealing Element Style: ANGULAR
  • Case Style: SQUARE
  • Material: STEEL CASE
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Accommodated Shaft Diameter: 0.616 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Case construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-990-2580, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN5330-00-990-2580
Primary Part Number4037
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerFreudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division
StatusACTIVE
Housing Bore Diameter1.003 INCHES MINIMUM AND 1.007 INCHES MAXIMUM IN
Seal Width0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
Sealing Element StyleANGULAR
Case StyleSQUARE
MaterialSTEEL CASE
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Accommodated Shaft Diameter0.616 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3439-00-020-8596 INTERCHANGEABLE
Heating Unit,electric Soldering
5305-00-072-35586110SS1032-7 INTERCHANGEABLE
Screw,externally Relieved Body
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5930-00-108-69112154ALSPC30 INTERCHANGEABLE
Switch,toggle
Dynalec Corporation
5120-00-187-7129 INTERCHANGEABLE
Wrench,open End
6645-00-225-27324037 INTERCHANGEABLE
Wheel,eight Day
Wakmann Watch Company Inc
2910-00-333-3834 INTERCHANGEABLE
Pump,fuel,cam Actuated
5355-00-408-26384037 INTERCHANGEABLE
Dial Assy
Vemaline Products Inc Dba Handles Unlimited Div Handles Unlimited
5305-00-408-59874037 INTERCHANGEABLE
Thumbscrew
Roller Bearing Co of America, Inc Div Pic Design
4720-00-540-26004037 INTERCHANGEABLE
Hose,air Duct
Flexaust Inc
5998-00-902-66984037 INTERCHANGEABLE
Electronic Components Assembly
The Bechdon Company, Llc
Cross-Reference Index
Part NumberManufacturer
2-300-139 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
2-300-139-02 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
2-300-139-01 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
509298 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
4037 PRIMARY Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division (USA)
Related Parts
3439-00-020-8596INTERCHANGEABLE
HEATING UNIT,ELECTRIC SOLDERING
5305-00-072-3558INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
6110SS1032-7
5930-00-108-6911INTERCHANGEABLE
SWITCH,TOGGLE
2154ALSPC30
5120-00-187-7129INTERCHANGEABLE
WRENCH,OPEN END
6645-00-225-2732INTERCHANGEABLE
WHEEL,EIGHT DAY
4037
2910-00-333-3834INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
5355-00-408-2638INTERCHANGEABLE
DIAL ASSY
4037
5305-00-408-5987INTERCHANGEABLE
THUMBSCREW
4037
4720-00-540-2600INTERCHANGEABLE
HOSE,AIR DUCT
4037
5998-00-902-6698INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
4037
5905-01-038-7825INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
91J2R0
6515-01-105-3589INTERCHANGEABLE
BLOOD SAMPLE COLLECTING KIT
4037-1

Frequently Asked Questions

What is NSN 5330-00-990-2580?

NSN 5330-00-990-2580 is a Seal,plain Encased, manufactured by Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-990-2580?

NSN 5330-00-990-2580 has 5 cross-referenced part numbers: 2-300-139 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 2-300-139-02 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 2-300-139-01 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 509298 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 4037 (Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division).

What NSN replaces 5330-00-990-2580?

There are 12 known substitutes for 5330-00-990-2580: 3439-00-020-8596, 5305-00-072-3558, 5930-00-108-6911 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4037?

Key specifications for 4037: Housing Bore Diameter: 1.003 INCHES MINIMUM AND 1.007 INCHES MAXIMUM IN; Seal Width: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR; Case Style: SQUARE. 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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