PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21158-2171Seal,plain Encased

Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc · NSN 5330-00-805-8379 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-805-8379 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-805-8379. Primary manufacturer part number: 21158-2171.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: SQUARE
  • Accommodated Shaft Maximum Rated Speed: 3000 FEET PER MINUTE FT
  • Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
  • Color: BLACK
  • Sealing Element Style: ANGULAR
  • Accommodated Shaft Diameter: 3.000 INCHES NOMINAL IN
  • Housing Bore Diameter: 3.876 INCHES NOMINAL 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 5330-00-805-8379, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-805-8379
Primary Part Number21158-2171
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerGarlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
StatusCANCELLED
Case StyleSQUARE
Accommodated Shaft Maximum Rated Speed3000 FEET PER MINUTE FT
Temp Rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
ColorBLACK
Sealing Element StyleANGULAR
Accommodated Shaft Diameter3.000 INCHES NOMINAL IN
Housing Bore Diameter3.876 INCHES NOMINAL IN
Seal Width0.375 INCHES NOMINAL IN
Hardness Rating80.0 SHORE DUROMETER A NOMINAL OVERALL
MaterialSTEEL CASE
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Maximum Pressure Rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4320-00-147-86962171 INTERCHANGEABLE
Impeller,pump,centrifugal
Gusher Pumps
8345-00-151-660421-71 INTERCHANGEABLE
Streamer Set Attachment,award
Navy Clothing and Textile Research Facility Natick Laboratories
5120-00-221-114717-1 INTERCHANGEABLE
Punch and Die,grommet Inserting
Wilson Corporation, Inc. Dba Hollingsworth Mfg. Co. Div Hollingsworth Mfg.
9540-00-251-2651 INTERCHANGEABLE
Angle,structural
5325-00-285-8362 INTERCHANGEABLE
Grommet,nonmetallic
4820-00-328-32832171 INTERCHANGEABLE
Cock,poppet Drain
Parker Hannifin Corporation Div Aerospace Group Headquarters
6160-00-444-2198SMB531943 INTERCHANGEABLE
Retainer,battery
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5910-00-563-6790 INTERCHANGEABLE
Capacitor,variable,air Dielectri
4730-00-604-19032171 INTERCHANGEABLE
Parts Kit,steam Trap
Plenty Inc
6145-00-728-4026 INTERCHANGEABLE
Braid,wire
Cross-Reference Index
Part NumberManufacturer
2171 Westinghouse Electric Corp (USA)
26J130PC66 Westinghouse Electric Corp Power Generation-Turbine Div (USA)
26J130PC66 Westinghouse Electric Corp (USA)
26J52PC96 Northrop Grumman Systems Corporation Div Marine Systems (USA)
2171 Westinghouse Electric Corp Control Business Unit
26J52PC96 Westinghouse Electric Corp Power Generation-Turbine Div (USA)
26J81PC66 Northrop Grumman Systems Corporation Div Marine Systems (USA)
25J749PC5 Westinghouse Electric Corp Power Generation-Turbine Div (USA)
25J749PC5 Westinghouse Electric Corp (USA)
25J749PC5 Northrop Grumman Systems Corporation Div Marine Systems (USA)
26J52PC96 Westinghouse Electric Corp (USA)
26J81PC66 Westinghouse Electric Corp Power Generation-Turbine Div (USA)
21158-2171 PRIMARY Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
26J130PC66 Northrop Grumman Systems Corporation Div Marine Systems (USA)
2171 Westinghouse Electric Corp Power Generation-Turbine Div (USA)
26J81PC66 Westinghouse Electric Corp (USA)
2171 Northrop Grumman Systems Corporation Div Marine Systems (USA)
Related Parts
4320-00-147-8696INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
2171
8345-00-151-6604INTERCHANGEABLE
STREAMER SET ATTACHMENT,AWARD
21-71
5120-00-221-1147INTERCHANGEABLE
PUNCH AND DIE,GROMMET INSERTING
17-1
9540-00-251-2651INTERCHANGEABLE
ANGLE,STRUCTURAL
5325-00-285-8362INTERCHANGEABLE
GROMMET,NONMETALLIC
4820-00-328-3283INTERCHANGEABLE
COCK,POPPET DRAIN
2171
6160-00-444-2198INTERCHANGEABLE
RETAINER,BATTERY
SMB531943
5910-00-563-6790INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
4730-00-604-1903INTERCHANGEABLE
PARTS KIT,STEAM TRAP
2171
6145-00-728-4026INTERCHANGEABLE
BRAID,WIRE
5940-00-736-7395INTERCHANGEABLE
TERMINAL BOARD
5325-01-376-8637INTERCHANGEABLE
GROMMET,NONMETALLIC
217-00100

Frequently Asked Questions

What is NSN 5330-00-805-8379?

NSN 5330-00-805-8379 is a Seal,plain Encased, manufactured by Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-805-8379?

NSN 5330-00-805-8379 has 17 cross-referenced part numbers: 2171 (Westinghouse Electric Corp), 26J130PC66 (Westinghouse Electric Corp Power Generation-Turbine Div), 26J130PC66 (Westinghouse Electric Corp), 26J52PC96 (Northrop Grumman Systems Corporation Div Marine Systems), 2171 (Westinghouse Electric Corp Control Business Unit) and 12 more.

What NSN replaces 5330-00-805-8379?

There are 12 known substitutes for 5330-00-805-8379: 4320-00-147-8696, 8345-00-151-6604, 5120-00-221-1147 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21158-2171?

Key specifications for 21158-2171: Case Style: SQUARE; Accommodated Shaft Maximum Rated Speed: 3000 FEET PER MINUTE FT; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF; Color: BLACK. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-805-8379 still in active supply?

NSN 5330-00-805-8379 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com