PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99401Seal,plain

The Timken Corporation · NSN 5330-01-591-5425 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-591-5425 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-591-5425. Primary manufacturer part number: 99401.
Features
  • Seal,plain — FSC 5330
  • 1 verified cross-reference
  • Primary manufacturer: The Timken Corporation
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain, cataloged under National Stock Number 5330-01-591-5425, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Timken Corporation. This item has 1 commercial cross-reference 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: Active.

Catalog Facts
Item NameSeal,plain
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersThe Timken Corporation (CAGE 60038)
Technical Specifications
ParameterValue
NSN5330-01-591-5425
Primary Part Number99401
Item NameSeal,plain
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerThe Timken Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4730-00-278-5006 INTERCHANGEABLE
Cap,tube
3110-00-771-05259940-1 INTERCHANGEABLE
Bearing,ball,annular
B.w. Elliott Manufacturing Co., Llc
5307-01-599-613999401 INTERCHANGEABLE
Stud,plain
Charles Reed Knight Jr Dba Knight's Armament Company
3120-01-690-719399401 INTERCHANGEABLE
Bearing,sleeve
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
Cross-Reference Index
Part NumberManufacturer
99401 PRIMARY The Timken Corporation (USA)
Related Parts
4730-00-278-5006INTERCHANGEABLE
CAP,TUBE
3110-00-771-0525INTERCHANGEABLE
BEARING,BALL,ANNULAR
9940-1
5307-01-599-6139INTERCHANGEABLE
STUD,PLAIN
99401
3120-01-690-7193INTERCHANGEABLE
BEARING,SLEEVE
99401

Frequently Asked Questions

What is NSN 5330-01-591-5425?

NSN 5330-01-591-5425 is a Seal,plain, manufactured by The Timken Corporation, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-591-5425?

NSN 5330-01-591-5425 has 1 cross-referenced part number: 99401 (The Timken Corporation).

What NSN replaces 5330-01-591-5425?

There are 4 known substitutes for 5330-01-591-5425: 4730-00-278-5006, 3110-00-771-0525, 5307-01-599-6139 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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