PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21158-0257Seal,plain Encased

Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc · NSN 5330-00-291-6385 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-291-6385 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-291-6385. Primary manufacturer part number: 21158-0257.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 1.752 INCHES NOMINAL IN
  • Case Style: SQUARE
  • Sealing Element Style: ANGULAR
  • Seal Width: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
  • Maximum Pressure Rating: 7.0 POUNDS PER SQUARE INCH (PSI) LBS
  • Color: BLACK
  • Material: LEATHER AND RUBBER SYNTHETIC SEALING ELEMENT
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Leather and Rubber Synthetic Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-291-6385, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-291-6385
Primary Part Number21158-0257
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerGarlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
StatusACTIVE
Housing Bore Diameter1.752 INCHES NOMINAL IN
Case StyleSQUARE
Sealing Element StyleANGULAR
Seal Width0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
Maximum Pressure Rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
ColorBLACK
MaterialLEATHER AND RUBBER SYNTHETIC SEALING ELEMENT
Accommodated Shaft Maximum Rated Speed3000 FEET PER MINUTE FT
MaterialSTEEL CASE
Hardness Rating80.0 SHORE DUROMETER A NOMINAL OVERALL
Temp Rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
Accommodated Shaft Diameter0.938 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-144-8662 INTERCHANGEABLE
Bearing,ball,annular
5962-00-539-9753 INTERCHANGEABLE
Microcircuit,digital
4710-00-758-922717530 INTERCHANGEABLE
Tube Assembly,metal
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5360-00-867-668217530 INTERCHANGEABLE
Spring,winch
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
3030-01-179-326517530 INTERCHANGEABLE
Belt,v
Carlisle Power Transmission Products Inc
4320-01-202-841801753-00 INTERCHANGEABLE
Sleeve,shaft,pump
Curtiss-Wright Electro-Mechanical Corporation Div Epd
3030-01-286-323917530 INTERCHANGEABLE
Belt,v
Muviq Usa, Llc
5895-01-315-680317530 INTERCHANGEABLE
Decoder,audio Frequency
U S Dept of Transportation Federal Aviation Administration
7510-01-420-8078386-14B INTERCHANGEABLE
Binder,loose-Leaf
Acco Usa Inc Co
4820-01-561-499417530 INTERCHANGEABLE
Valve,ball
Thrall Distribution
Cross-Reference Index
Part NumberManufacturer
21158-0257 Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
RT8100-128 Jaeger Machine Co (USA)
17530 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
3110-00-144-8662INTERCHANGEABLE
BEARING,BALL,ANNULAR
5962-00-539-9753INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
4710-00-758-9227INTERCHANGEABLE
TUBE ASSEMBLY,METAL
17530
5360-00-867-6682INTERCHANGEABLE
SPRING,WINCH
17530
3030-01-179-3265INTERCHANGEABLE
BELT,V
17530
4320-01-202-8418INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
01753-00
3030-01-286-3239INTERCHANGEABLE
BELT,V
17530
5895-01-315-6803INTERCHANGEABLE
DECODER,AUDIO FREQUENCY
17530
7510-01-420-8078INTERCHANGEABLE
BINDER,LOOSE-LEAF
386-14B
4820-01-561-4994INTERCHANGEABLE
VALVE,BALL
17530

Frequently Asked Questions

What is NSN 5330-00-291-6385?

NSN 5330-00-291-6385 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: active.

What are the part numbers for NSN 5330-00-291-6385?

NSN 5330-00-291-6385 has 3 cross-referenced part numbers: 21158-0257 (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc), RT8100-128 (Jaeger Machine Co), 17530 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5330-00-291-6385?

There are 10 known substitutes for 5330-00-291-6385: 3110-00-144-8662, 5962-00-539-9753, 4710-00-758-9227 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21158-0257?

Key specifications for 21158-0257: Housing Bore Diameter: 1.752 INCHES NOMINAL IN; Case Style: SQUARE; Sealing Element Style: ANGULAR; Seal Width: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN. 12 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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