PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5050-3Seal,plain Encased

Besser Company Dba Besser · NSN 5330-00-870-7435 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-870-7435 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-870-7435. Primary manufacturer part number: 5050-3.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: RECESSED
  • Accommodated Shaft Diameter: 1.500 INCHES NOMINAL IN
  • Sealing Element Style: ANGULAR
  • Housing Bore Diameter: 2.250 INCHES NOMINAL IN
  • Seal Width: 0.375 INCHES NOMINAL IN
  • Material: STEEL CASE
  • Material: RUBBER SYNTHETIC 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 5330-00-870-7435, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Besser Company Dba Besser. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-870-7435
Primary Part Number5050-3
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerBesser Company Dba Besser
StatusCANCELLED
Case StyleRECESSED
Accommodated Shaft Diameter1.500 INCHES NOMINAL IN
Sealing Element StyleANGULAR
Housing Bore Diameter2.250 INCHES NOMINAL IN
Seal Width0.375 INCHES NOMINAL IN
MaterialSTEEL CASE
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Surface TreatmentCADMIUM CASE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4730-00-187-7613 INTERCHANGEABLE
Coupling,pipe
5815-00-356-3340SC-B-69640 INTERCHANGEABLE
Bar,selector,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5905-00-542-7802 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
4520-00-878-387650503 INTERCHANGEABLE
Heating Element,electrical,nonim
Wells Mfg Co
5950-01-029-16973207670 INTERCHANGEABLE
Transformer,power
United States Department of the Navy Dba Naval Undersea Warfare Ctr Div
4520-01-305-857450503 INTERCHANGEABLE
Heating Element,electrical,nonim
Indeeco Llc Dba Indeeco
Cross-Reference Index
Part NumberManufacturer
5050-3 Eaton Corporation Dba Jackson Plant (USA)
5050-3 PRIMARY Besser Company Dba Besser (USA)
5050-3 Kent Machine Co the Div of the Lamson and Sessions Co (USA)
470503 Besser Company Dba Besser (USA)
Related Parts
4730-00-187-7613INTERCHANGEABLE
COUPLING,PIPE
5815-00-356-3340INTERCHANGEABLE
BAR,SELECTOR,TELETYPEWRITER
SC-B-69640
5905-00-542-7802INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
4520-00-878-3876INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
50503
5950-01-029-1697INTERCHANGEABLE
TRANSFORMER,POWER
3207670
4520-01-305-8574INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
50503

Frequently Asked Questions

What is NSN 5330-00-870-7435?

NSN 5330-00-870-7435 is a Seal,plain Encased, manufactured by Besser Company Dba Besser, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-870-7435?

NSN 5330-00-870-7435 has 4 cross-referenced part numbers: 5050-3 (Eaton Corporation Dba Jackson Plant), 5050-3 (Besser Company Dba Besser), 5050-3 (Kent Machine Co the Div of the Lamson and Sessions Co), 470503 (Besser Company Dba Besser).

What NSN replaces 5330-00-870-7435?

There are 6 known substitutes for 5330-00-870-7435: 4730-00-187-7613, 5815-00-356-3340, 5905-00-542-7802 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5050-3?

Key specifications for 5050-3: Case Style: RECESSED; Accommodated Shaft Diameter: 1.500 INCHES NOMINAL IN; Sealing Element Style: ANGULAR; Housing Bore Diameter: 2.250 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-870-7435 still in active supply?

NSN 5330-00-870-7435 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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