PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6303-5Seal,plain Encased

Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division · NSN 5330-01-256-0426 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-256-0426 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-256-0426. Primary manufacturer part number: 6303-5.
Features
  • Seal,plain Encased — FSC 5330
  • Material: STEEL CASE
  • Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM SEALING ELEMENT
  • 1 verified cross-reference
  • Primary manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
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 5330-01-256-0426, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-256-0426
Primary Part Number6303-5
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
StatusACTIVE
MaterialSTEEL CASE
MaterialRUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM SEALING ELEMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-01-193-491463035 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5330-01-267-74286303-5.00 INTERCHANGEABLE
Gasket
Parker-Hannifin Corp Div O-Ring Division
4940-01-449-400063035 INTERCHANGEABLE
Auger,pipe Cleaning,sewer
Ridge Tool Company
Cross-Reference Index
Part NumberManufacturer
6303-5 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA)
Related Parts
5905-01-193-4914INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
63035
5330-01-267-7428INTERCHANGEABLE
GASKET
6303-5.00
4940-01-449-4000INTERCHANGEABLE
AUGER,PIPE CLEANING,SEWER
63035

Frequently Asked Questions

What is NSN 5330-01-256-0426?

NSN 5330-01-256-0426 is a Seal,plain Encased, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-256-0426?

NSN 5330-01-256-0426 has 1 cross-referenced part number: 6303-5 (Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division).

What NSN replaces 5330-01-256-0426?

There are 3 known substitutes for 5330-01-256-0426: 5905-01-193-4914, 5330-01-267-7428, 4940-01-449-4000. Verify interchangeability with system specifications before substitution.

What are the specifications of 6303-5?

Key specifications for 6303-5: Material: STEEL CASE; Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM SEALING ELEMENT. 2 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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