PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4238-1Seal,plain Encased

Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division · NSN 5330-00-143-8648 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-143-8648 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-143-8648. Primary manufacturer part number: 4238-1.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: SQUARE
  • Material: RUBBER SEALING ELEMENT
  • Material Document and Classification: -4601,91547 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT
  • Material: STEEL CASE
  • Material Document and Classification: J403E NOS 1010,81343 MFR REF SINGLE MATERIAL RESPONSE CASE
  • Accommodated Shaft Diameter: 0.445 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
  • Seal Width: 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-143-8648, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5330-00-143-8648
Primary Part Number4238-1
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerFreudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division
StatusACTIVE
Case StyleSQUARE
MaterialRUBBER SEALING ELEMENT
Material Document and Classification-4601,91547 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT
MaterialSTEEL CASE
Material Document and ClassificationJ403E NOS 1010,81343 MFR REF SINGLE MATERIAL RESPONSE CASE
Accommodated Shaft Diameter0.445 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
Seal Width0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Housing Bore Diameter1.001 INCHES MINIMUM AND 1.003 INCHES MAXIMUM IN
Accommodated Shaft Maximum Rated Speed42000 FEET PER MINUTE FT
Sealing Element StyleANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-159-939142381 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5962-01-088-946942381 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
7530-01-365-885042-381 INTERCHANGEABLE
Label
Maytag and Label Corp
Cross-Reference Index
Part NumberManufacturer
4238-1 PRIMARY Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division (USA)
1-300-234-02 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
Related Parts
3110-00-159-9391INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
42381
5962-01-088-9469INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
42381
7530-01-365-8850INTERCHANGEABLE
LABEL
42-381

Frequently Asked Questions

What is NSN 5330-00-143-8648?

NSN 5330-00-143-8648 is a Seal,plain Encased, manufactured by Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-143-8648?

NSN 5330-00-143-8648 has 2 cross-referenced part numbers: 4238-1 (Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division), 1-300-234-02 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix).

What NSN replaces 5330-00-143-8648?

There are 3 known substitutes for 5330-00-143-8648: 3110-00-159-9391, 5962-01-088-9469, 7530-01-365-8850. Verify interchangeability with system specifications before substitution.

What are the specifications of 4238-1?

Key specifications for 4238-1: Case Style: SQUARE; Material: RUBBER SEALING ELEMENT; Material Document and Classification: -4601,91547 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT; Material: STEEL CASE. 10 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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