PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

350W525Seal,plain Encased

Cone Drive Operations Inc · NSN 5330-00-140-4907 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-140-4907 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-140-4907. Primary manufacturer part number: 350W525.
Features
  • Seal,plain Encased — FSC 5330
  • Temp Rating: -50.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
  • Accommodated Shaft Diameter: 3.625 INCHES NOMINAL IN
  • Case Style: SQUARE
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Material: STEEL CASE
  • Sealing Element Style: ANGULAR
  • Seal Width: 0.468 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 5330-00-140-4907, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cone Drive Operations Inc. Government technical data includes 9 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-140-4907
Primary Part Number350W525
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCone Drive Operations Inc
StatusACTIVE
Temp Rating-50.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
Accommodated Shaft Diameter3.625 INCHES NOMINAL IN
Case StyleSQUARE
MaterialRUBBER SYNTHETIC SEALING ELEMENT
MaterialSTEEL CASE
Sealing Element StyleANGULAR
Seal Width0.468 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Housing Bore Diameter5.256 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5985-00-135-2900713-0065-020 INTERCHANGEABLE
Dummy Load,electrical
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
2815-00-146-3032 INTERCHANGEABLE
Manifold,e,haust
2540-00-191-07635551 INTERCHANGEABLE
Handle,door,vehicular
Fwd Seagrave Holdings Lp
5340-00-582-20485551 INTERCHANGEABLE
Handle,door
Eastern Co Div Eberhard Manufacturing
6750-00-988-0557542668 INTERCHANGEABLE
Paper,photographic
Ilford Photo Corp
5950-01-166-80055198370 INTERCHANGEABLE
Transformer,power
Naval Sea Systems Command
5330-01-249-67325551 INTERCHANGEABLE
Packing Material
Clayton Manufacturing Company
5970-01-517-42127000006046 INTERCHANGEABLE
Repair Kit,electrical Cable Insu
3m Company
Cross-Reference Index
Part NumberManufacturer
5551 Federal-Mogul Corp Government Sales Dept (USA)
350W525 PRIMARY Cone Drive Operations Inc (USA)
Related Parts
5985-00-135-2900INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
713-0065-020
2815-00-146-3032INTERCHANGEABLE
MANIFOLD,E,HAUST
2540-00-191-0763INTERCHANGEABLE
HANDLE,DOOR,VEHICULAR
5551
5340-00-582-2048INTERCHANGEABLE
HANDLE,DOOR
5551
6750-00-988-0557INTERCHANGEABLE
PAPER,PHOTOGRAPHIC
542668
5950-01-166-8005INTERCHANGEABLE
TRANSFORMER,POWER
5198370
5330-01-249-6732INTERCHANGEABLE
PACKING MATERIAL
5551
5970-01-517-4212INTERCHANGEABLE
REPAIR KIT,ELECTRICAL CABLE INSU
7000006046

Frequently Asked Questions

What is NSN 5330-00-140-4907?

NSN 5330-00-140-4907 is a Seal,plain Encased, manufactured by Cone Drive Operations Inc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-140-4907?

NSN 5330-00-140-4907 has 2 cross-referenced part numbers: 5551 (Federal-Mogul Corp Government Sales Dept), 350W525 (Cone Drive Operations Inc).

What NSN replaces 5330-00-140-4907?

There are 8 known substitutes for 5330-00-140-4907: 5985-00-135-2900, 2815-00-146-3032, 2540-00-191-0763 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 350W525?

Key specifications for 350W525: Temp Rating: -50.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF; Accommodated Shaft Diameter: 3.625 INCHES NOMINAL IN; Case Style: SQUARE; Material: RUBBER SYNTHETIC SEALING ELEMENT. 9 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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