PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

305A-239Seal,plain

Bal Seal Engineering, Inc. · NSN 5330-01-171-5915 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-171-5915 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-171-5915. Primary manufacturer part number: 305A-239.
Features
  • Seal,plain — FSC 5330
  • Housing Bore Diameter: 3.874 INCHES MINIMUM AND 3.876 INCHES MAXIMUM IN
  • Accommodated Shaft Diameter: 3.624 INCHES MINIMUM AND 3.626 INCHES MAXIMUM IN
  • Seal Width: 0.170 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
  • Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
  • 2 verified cross-references
  • Primary manufacturer: Bal Seal Engineering, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain, cataloged under National Stock Number 5330-01-171-5915, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bal Seal Engineering, Inc.. Government technical data includes 4 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-171-5915
Primary Part Number305A-239
Item NameSeal,plain
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerBal Seal Engineering, Inc.
StatusACTIVE
Housing Bore Diameter3.874 INCHES MINIMUM AND 3.876 INCHES MAXIMUM IN
Accommodated Shaft Diameter3.624 INCHES MINIMUM AND 3.626 INCHES MAXIMUM IN
Seal Width0.170 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
Temp Rating-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5961-00-888-9192305-0239 INTERCHANGEABLE
Semiconductor Device,diode
Cummins Power Generation Inc.
Cross-Reference Index
Part NumberManufacturer
305A-239 PRIMARY Bal Seal Engineering, Inc. (USA)
5189268-001 Naval Sea Systems Command (USA)
Related Parts
5961-00-888-9192INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
305-0239

Frequently Asked Questions

What is NSN 5330-01-171-5915?

NSN 5330-01-171-5915 is a Seal,plain, manufactured by Bal Seal Engineering, Inc., classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-171-5915?

NSN 5330-01-171-5915 has 2 cross-referenced part numbers: 305A-239 (Bal Seal Engineering, Inc.), 5189268-001 (Naval Sea Systems Command).

What NSN replaces 5330-01-171-5915?

There is 1 known substitute for 5330-01-171-5915: 5961-00-888-9192. Verify interchangeability with system specifications before substitution.

What are the specifications of 305A-239?

Key specifications for 305A-239: Housing Bore Diameter: 3.874 INCHES MINIMUM AND 3.876 INCHES MAXIMUM IN; Accommodated Shaft Diameter: 3.624 INCHES MINIMUM AND 3.626 INCHES MAXIMUM IN; Seal Width: 0.170 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN; Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF. 4 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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