PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20568Seal,plain Encased

Itt Marlow a Unit of Itt Pumps and Compressors Div · NSN 5330-00-349-3989 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-349-3989 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-349-3989. Primary manufacturer part number: 20568.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 2.250 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Case Style: SQUARE
  • Sealing Element Style: ANGULAR
  • Material: STEEL CASE
  • Accommodated Shaft Diameter: 1.375 INCHES NOMINAL IN
  • Seal Width: 0.375 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-349-3989, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Itt Marlow a Unit of Itt Pumps and Compressors Div. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-349-3989
Primary Part Number20568
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerItt Marlow a Unit of Itt Pumps and Compressors Div
StatusCANCELLED
Housing Bore Diameter2.250 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Case StyleSQUARE
Sealing Element StyleANGULAR
MaterialSTEEL CASE
Accommodated Shaft Diameter1.375 INCHES NOMINAL IN
Seal Width0.375 INCHES NOMINAL IN
Surface TreatmentCADMIUM OR ZINC CASE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5950-00-964-40191838314-2 INTERCHANGEABLE
Transformer,power
Honeywell Intl Inc Defense Avionics Systems
6130-00-986-823420568 INTERCHANGEABLE
Power Supply
Senior Operations Llc Div Senior Aerospace Ketema
5130-01-400-0126 INTERCHANGEABLE
Socket,socket Wrench
2590-01-556-486620568 INTERCHANGEABLE
Pkg,heater Ay
Parker-Hannifin Corporation Dba Racor Division Div Racor Division
Cross-Reference Index
Part NumberManufacturer
20568 PRIMARY Itt Marlow a Unit of Itt Pumps and Compressors Div (USA)
20568-00 PRIMARY Itt Marlow a Unit of Itt Pumps and Compressors Div (USA)
Related Parts
5950-00-964-4019INTERCHANGEABLE
TRANSFORMER,POWER
1838314-2
6130-00-986-8234INTERCHANGEABLE
POWER SUPPLY
20568
5130-01-400-0126INTERCHANGEABLE
SOCKET,SOCKET WRENCH
2590-01-556-4866INTERCHANGEABLE
PKG,HEATER AY
20568

Frequently Asked Questions

What is NSN 5330-00-349-3989?

NSN 5330-00-349-3989 is a Seal,plain Encased, manufactured by Itt Marlow a Unit of Itt Pumps and Compressors Div, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-349-3989?

NSN 5330-00-349-3989 has 2 cross-referenced part numbers: 20568 (Itt Marlow a Unit of Itt Pumps and Compressors Div), 20568-00 (Itt Marlow a Unit of Itt Pumps and Compressors Div).

What NSN replaces 5330-00-349-3989?

There are 4 known substitutes for 5330-00-349-3989: 5950-00-964-4019, 6130-00-986-8234, 5130-01-400-0126 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20568?

Key specifications for 20568: Housing Bore Diameter: 2.250 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC SEALING ELEMENT; Case Style: SQUARE; Sealing Element Style: ANGULAR. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-349-3989 still in active supply?

NSN 5330-00-349-3989 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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