PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30J251-93Seal,plain Encased

Westinghouse Electric Corp · NSN 5330-00-178-4699 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-178-4699 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-178-4699. Primary manufacturer part number: 30J251-93.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: ANGULAR
  • Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN
  • Seal Width: 0.438 INCHES NOMINAL IN
  • Case Style: SQUARE
  • Material: STEEL CASE
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Material: LEATHER SEALING ELEMENT
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 5330-00-178-4699, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Westinghouse Electric Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 34 commercial cross-references from 24 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
NSN5330-00-178-4699
Primary Part Number30J251-93
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerWestinghouse Electric Corp
StatusCANCELLED
Sealing Element StyleANGULAR
Accommodated Shaft Diameter1.125 INCHES NOMINAL IN
Seal Width0.438 INCHES NOMINAL IN
Case StyleSQUARE
MaterialSTEEL CASE
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
MaterialLEATHER SEALING ELEMENT
Housing Bore Diameter1.828 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-036-17630053040192 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5950-00-050-325811168 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
4720-00-096-6374215013 INTERCHANGEABLE
Hose Assembly,nonmetallic
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
3110-00-100-362755187 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5940-00-156-741111 INTERCHANGEABLE
Terminal,lug
Zierick Mfg Corp
4820-00-209-1705 INTERCHANGEABLE
Valve,check
5310-00-209-255911169 INTERCHANGEABLE
Washer,key
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4320-00-218-348011168 INTERCHANGEABLE
Shaft,pump
Rps-Fl, Inc. Dba Rps Inc
5330-00-285-948963X0355 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
2835-00-302-201211063 INTERCHANGEABLE
Cover Assembly,fuel Control Box
Rtx Corporation Div Pratt & Whitney
Cross-Reference Index
Part NumberManufacturer
S637471 Westinghouse Electric Corp (USA)
140316 Komatsu American Intl Co (USA)
DS2709 Energy Services Group Div of Cooper Industries Inc (USA)
18314 Westinghouse Electric Corp Control Business Unit
P104-394 Barber-Greene Co (USA)
AX54871 Zf Industrieantriebe Witten Gmbh (DEU)
B3281 Dresser, Llc (USA)
P104-394 Minnpar, Llc Dba Minnpar (USA)
N2093PC227 American Laundry Machinery Inc (USA)
14J240PC93 Westinghouse Electric Corp (USA)
H17944 International Harvester Co Agricultural Equipment Div (USA)
DSR2709 Energy Services Group Div of Cooper Industries Inc (USA)
4159A Allianz Sweeper Company (USA)
51X356 Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
3202034 Hatch & Kirk, Inc. (USA)
30J251-93 PRIMARY Westinghouse Electric Corp (USA)
XX4159A Allianz Sweeper Company (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
10-52507 Amphenol Corp Div Amphenol Aerospace Operations (USA)
03869AB Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
4820-00-036-1763INTERCHANGEABLE
DISK,VALVE
0053040192
5950-00-050-3258INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
11168
4720-00-096-6374INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
215013
3110-00-100-3627INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
55187
5940-00-156-7411INTERCHANGEABLE
TERMINAL,LUG
11
4820-00-209-1705INTERCHANGEABLE
VALVE,CHECK
5310-00-209-2559INTERCHANGEABLE
WASHER,KEY
11169
4320-00-218-3480INTERCHANGEABLE
SHAFT,PUMP
11168
5330-00-285-9489INTERCHANGEABLE
SEAL,PLAIN ENCASED
63X0355
2835-00-302-2012INTERCHANGEABLE
COVER ASSEMBLY,FUEL CONTROL BOX
11063
6220-00-424-1504INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
1F5041
5120-00-540-4134INTERCHANGEABLE
POT,MELTING
398-5

Frequently Asked Questions

What is NSN 5330-00-178-4699?

NSN 5330-00-178-4699 is a Seal,plain Encased, manufactured by Westinghouse Electric Corp, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-178-4699?

NSN 5330-00-178-4699 has 34 cross-referenced part numbers: S637471 (Westinghouse Electric Corp), 140316 (Komatsu American Intl Co), DS2709 (Energy Services Group Div of Cooper Industries Inc), 18314 (Westinghouse Electric Corp Control Business Unit), P104-394 (Barber-Greene Co) and 29 more.

What NSN replaces 5330-00-178-4699?

There are 12 known substitutes for 5330-00-178-4699: 4820-00-036-1763, 5950-00-050-3258, 4720-00-096-6374 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30J251-93?

Key specifications for 30J251-93: Sealing Element Style: ANGULAR; Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN; Seal Width: 0.438 INCHES NOMINAL IN; Case Style: SQUARE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-178-4699 still in active supply?

NSN 5330-00-178-4699 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.
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