PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21173Seal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-00-841-6976 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-841-6976 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-841-6976. Primary manufacturer part number: 21173.
Features
  • Seal,plain Encased — FSC 5330
  • Seal Width: 0.688 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN
  • Sealing Element Style: VERTICAL-ANGULAR
  • Case Style: SQUARE
  • Material: LEATHER SEALING ELEMENT A
  • Accommodated Shaft Diameter: 2.125 INCHES NOMINAL IN
  • Outside Diameter: 3.005 INCHES NOMINAL IN
  • Surface Treatment: PLASTIC CASE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Leather Sealing Element a construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-841-6976, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-841-6976
Primary Part Number21173
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusACTIVE
Seal Width0.688 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN
Sealing Element StyleVERTICAL-ANGULAR
Case StyleSQUARE
MaterialLEATHER SEALING ELEMENT A
Accommodated Shaft Diameter2.125 INCHES NOMINAL IN
Outside Diameter3.005 INCHES NOMINAL IN
Surface TreatmentPLASTIC CASE
MaterialSTEEL CASE
Temp Rating-250.0 FAHRENHEIT DEGF
MaterialLEATHER SEALING ELEMENT B
Housing Bore Diameter3.003 INCHES MINIMUM AND 3.007 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5950-00-324-0985989112-36B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
5905-00-666-1845D754 INTERCHANGEABLE
Resistor,thermal
Seco Tools, Llc Dba Seco
5940-00-789-840721173-000 INTERCHANGEABLE
Splice,conductor
Eaton Corporation Div Eaton Fluid Power
6550-01-243-5899 INTERCHANGEABLE
Culture Medium,mannitol Salt Aga
5340-01-342-52764-1030-3 INTERCHANGEABLE
Bumper
Star Cases Llc Dba Zero Manufacturing
2640-01-416-715821-173 INTERCHANGEABLE
Valve,pneumatic Tire
Myers Tire Supply Distribution Inc Div Akron Branch
2815-01-624-383421-173 INTERCHANGEABLE
Piston,internal Combustion Engin
Hii Unmanned Systems, Inc
Cross-Reference Index
Part NumberManufacturer
7710085 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
410303 Federal-Mogul Corp Engine and Transmission Products Group St Johns Plant (USA)
21173 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
5330008416976 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
5950-00-324-0985INTERCHANGEABLE
COIL,RADIO FREQUENCY
989112-36B
5905-00-666-1845INTERCHANGEABLE
RESISTOR,THERMAL
D754
5940-00-789-8407INTERCHANGEABLE
SPLICE,CONDUCTOR
21173-000
6550-01-243-5899INTERCHANGEABLE
CULTURE MEDIUM,MANNITOL SALT AGA
5340-01-342-5276INTERCHANGEABLE
BUMPER
4-1030-3
2640-01-416-7158INTERCHANGEABLE
VALVE,PNEUMATIC TIRE
21-173
2815-01-624-3834INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
21-173

Frequently Asked Questions

What is NSN 5330-00-841-6976?

NSN 5330-00-841-6976 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 5330-00-841-6976?

NSN 5330-00-841-6976 has 4 cross-referenced part numbers: 7710085 (U S Army Tank Automotive Command Amsta-Im-Mm), 410303 (Federal-Mogul Corp Engine and Transmission Products Group St Johns Plant), 21173 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 5330008416976 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales).

What NSN replaces 5330-00-841-6976?

There are 7 known substitutes for 5330-00-841-6976: 5950-00-324-0985, 5905-00-666-1845, 5940-00-789-8407 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21173?

Key specifications for 21173: Seal Width: 0.688 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN; Sealing Element Style: VERTICAL-ANGULAR; Case Style: SQUARE; Material: LEATHER SEALING ELEMENT A. 11 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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