PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50320Seal,plain Encased

Cooper Cameron Corp Ajax-Superior Div · NSN 5330-00-178-2186 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-178-2186 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-178-2186. Primary manufacturer part number: 50320.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: SQUARE
  • Accommodated Shaft Diameter: 2.375 INCHES NOMINAL IN
  • Material: STEEL CASE
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Seal Width: 0.438 INCHES NOMINAL IN
  • Material: LEATHER SEALING ELEMENT
  • Sealing Element Style: ANGULAR
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 5330-00-178-2186, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cooper Cameron Corp Ajax-Superior Div. Government technical data includes 8 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-178-2186
Primary Part Number50320
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCooper Cameron Corp Ajax-Superior Div
StatusACTIVE
Case StyleSQUARE
Accommodated Shaft Diameter2.375 INCHES NOMINAL IN
MaterialSTEEL CASE
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Seal Width0.438 INCHES NOMINAL IN
MaterialLEATHER SEALING ELEMENT
Sealing Element StyleANGULAR
Housing Bore Diameter3.189 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5940-00-025-3086B3936 INTERCHANGEABLE
Terminal,stud
Cummins Power Generation Inc.
5330-00-119-795361-4X7ANKP0LY INTERCHANGEABLE
Packing,preformed
Hydranamics Inc
5325-00-171-71455-0-320 INTERCHANGEABLE
Stud,turnlock Fastener
Southco Inc New York Div
9540-00-254-4154 INTERCHANGEABLE
Angle,structural
5330-00-290-0321 INTERCHANGEABLE
Seal,plain Encased
5998-00-327-470350320 INTERCHANGEABLE
Extender Card,electronic Test
Alliant Techsystems Operations Llc Div Defense Electronic Systems
2930-00-463-50548320B INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
5310-00-531-9514 INTERCHANGEABLE
Washer,flat
5365-00-658-36596025215 INTERCHANGEABLE
Spacer,sleeve
Chrysler Realty Company Llc Dba Daimler Chrysler
1650-00-809-928425-41072 INTERCHANGEABLE
Dampener,fluid Pressure
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
Cross-Reference Index
Part NumberManufacturer
50320 Cooper Cameron Corp Ajax-Superior Div (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
B-3936 Cooper Machinery Services Llc (USA)
Related Parts
5940-00-025-3086INTERCHANGEABLE
TERMINAL,STUD
B3936
5330-00-119-7953INTERCHANGEABLE
PACKING,PREFORMED
61-4X7ANKP0LY
5325-00-171-7145INTERCHANGEABLE
STUD,TURNLOCK FASTENER
5-0-320
9540-00-254-4154INTERCHANGEABLE
ANGLE,STRUCTURAL
5330-00-290-0321INTERCHANGEABLE
SEAL,PLAIN ENCASED
5998-00-327-4703INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
50320
2930-00-463-5054INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
8320B
5310-00-531-9514INTERCHANGEABLE
WASHER,FLAT
5365-00-658-3659INTERCHANGEABLE
SPACER,SLEEVE
6025215
1650-00-809-9284INTERCHANGEABLE
DAMPENER,FLUID PRESSURE
25-41072
1650-00-986-4102INTERCHANGEABLE
DAMPENER,FLUID PRESSURE
50320
6240-01-479-8340INTERCHANGEABLE
LAMP,INCANDESCENT
9X7849

Frequently Asked Questions

What is NSN 5330-00-178-2186?

NSN 5330-00-178-2186 is a Seal,plain Encased, manufactured by Cooper Cameron Corp Ajax-Superior Div, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-178-2186?

NSN 5330-00-178-2186 has 3 cross-referenced part numbers: 50320 (Cooper Cameron Corp Ajax-Superior Div), 00044 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), B-3936 (Cooper Machinery Services Llc).

What NSN replaces 5330-00-178-2186?

There are 12 known substitutes for 5330-00-178-2186: 5940-00-025-3086, 5330-00-119-7953, 5325-00-171-7145 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50320?

Key specifications for 50320: Case Style: SQUARE; Accommodated Shaft Diameter: 2.375 INCHES NOMINAL IN; Material: STEEL CASE; Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT. 8 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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