PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18039Seal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-00-531-2720 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-531-2720 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-531-2720. Primary manufacturer part number: 18039.
Features
  • Seal,plain Encased — FSC 5330
  • Seal Width: 0.312 INCHES NOMINAL IN
  • Accommodated Shaft Diameter: 1.813 INCHES NOMINAL IN
  • Housing Bore Diameter: 2.443 INCHES NOMINAL IN
  • Material: LEATHER SEALING ELEMENT
  • Outside Diameter: 2.441 INCHES NOMINAL IN
  • Sealing Element Style: ANGULAR
  • Material: STEEL CASE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Leather Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-531-2720, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-531-2720
Primary Part Number18039
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusACTIVE
Seal Width0.312 INCHES NOMINAL IN
Accommodated Shaft Diameter1.813 INCHES NOMINAL IN
Housing Bore Diameter2.443 INCHES NOMINAL IN
MaterialLEATHER SEALING ELEMENT
Outside Diameter2.441 INCHES NOMINAL IN
Sealing Element StyleANGULAR
MaterialSTEEL CASE
Case StyleSQUARE
Surface TreatmentPLASTIC CASE
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5970-00-042-953318039 INTERCHANGEABLE
Insulator,washer
Moog Inc
5133-00-189-9284 INTERCHANGEABLE
Drill,twist
5330-00-310-8769 INTERCHANGEABLE
Gasket
5330-00-410-066418039 INTERCHANGEABLE
Gasket
Provision, Inc. Dba Provision Inc
5970-00-992-3470382A023-3 INTERCHANGEABLE
Insulation Sleeving,electrical,s
Te Connectivity Corporation Dba Raychem Product Division
5315-01-303-473118039 INTERCHANGEABLE
Pin,straight,headless
Coffin Turbo Pump Inc
Cross-Reference Index
Part NumberManufacturer
18039 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
8201226 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
Related Parts
5970-00-042-9533INTERCHANGEABLE
INSULATOR,WASHER
18039
5133-00-189-9284INTERCHANGEABLE
DRILL,TWIST
5330-00-310-8769INTERCHANGEABLE
GASKET
5330-00-410-0664INTERCHANGEABLE
GASKET
18039
5970-00-992-3470INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL,S
382A023-3
5315-01-303-4731INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
18039

Frequently Asked Questions

What is NSN 5330-00-531-2720?

NSN 5330-00-531-2720 is a Seal,plain Encased, manufactured by Skf Usa Inc. Dba Skf Aerospace Sealing Solutions, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-531-2720?

NSN 5330-00-531-2720 has 2 cross-referenced part numbers: 18039 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 8201226 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).

What NSN replaces 5330-00-531-2720?

There are 6 known substitutes for 5330-00-531-2720: 5970-00-042-9533, 5133-00-189-9284, 5330-00-310-8769 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18039?

Key specifications for 18039: Seal Width: 0.312 INCHES NOMINAL IN; Accommodated Shaft Diameter: 1.813 INCHES NOMINAL IN; Housing Bore Diameter: 2.443 INCHES NOMINAL IN; Material: LEATHER SEALING ELEMENT. 10 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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