PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S15-226Seal,plain

Bal Seal Engineering, Inc. · NSN 5330-01-125-4370 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-125-4370 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-125-4370. Primary manufacturer part number: S15-226.
Features
  • Seal,plain — FSC 5330
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE SEALING ELEMENT
  • Accommodated Shaft Diameter: 2.250 INCHES NOMINAL IN
  • Material Document and Classification: QQ-W-423,COMP 302,COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING
  • Material: STEEL COMP 302 SPRING
  • Cross-Sectional Shape Style: C-SECTION W/ HELICAL SPRING
  • Construction: SOLID
  • Seal Width: 0.125 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Plastic Polytetrafluoroethylene Sealing Element construction
General Description

The Seal,plain, cataloged under National Stock Number 5330-01-125-4370, 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-01-125-4370
Primary Part NumberS15-226
Item NameSeal,plain
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerBal Seal Engineering, Inc.
StatusCANCELLED
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEALING ELEMENT
Accommodated Shaft Diameter2.250 INCHES NOMINAL IN
Material Document and ClassificationQQ-W-423,COMP 302,COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING
MaterialSTEEL COMP 302 SPRING
Cross-Sectional Shape StyleC-SECTION W/ HELICAL SPRING
ConstructionSOLID
Seal Width0.125 INCHES NOMINAL IN
Housing Bore Diameter2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5133-00-232-8142 INTERCHANGEABLE
Drill,twist
5975-00-234-353012497 INTERCHANGEABLE
Bushing,electrical Conductor
Grimes Aerospace Company
5950-00-438-652212498 INTERCHANGEABLE
Transformer,power
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5950-00-759-137312497 INTERCHANGEABLE
Transformer,power
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
4720-00-895-983112498 INTERCHANGEABLE
Hose Assembly,metallic
Senior Operations Llc Dba Metal Bellows Div Metal Bellows
5330-01-052-11241249-8 INTERCHANGEABLE
Packing,preformed
Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
5307-01-157-194612497 INTERCHANGEABLE
Stud,plain
Westerbeke Corporation
2590-01-204-800812497 INTERCHANGEABLE
Button,horn
Trw Inc Trw Commercial Steering Div
6150-01-258-403512497 INTERCHANGEABLE
Cable Assembly,special Purpose,e
The First Electronics Corporation
6150-01-258-403612498 INTERCHANGEABLE
Cable Assembly,special Purpose,e
The First Electronics Corporation
Cross-Reference Index
Part NumberManufacturer
PL-D-027 PIECE 6 Aerco International, Inc. Dba Aerco International Inc (USA)
S15-226 PRIMARY Bal Seal Engineering, Inc. (USA)
12739-3 AND 12741-3 Aerco International, Inc. Dba Aerco International Inc (USA)
12498 Aerco International, Inc. Dba Aerco International Inc (USA)
201 ITEM 13 Aerco International, Inc. Dba Aerco International Inc (USA)
12497 Zf Industrieantriebe Witten Gmbh (DEU)
S515-226 Bal Seal Engineering, Inc. (USA)
Related Parts
5133-00-232-8142INTERCHANGEABLE
DRILL,TWIST
5975-00-234-3530INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUCTOR
12497
5950-00-438-6522INTERCHANGEABLE
TRANSFORMER,POWER
12498
5950-00-759-1373INTERCHANGEABLE
TRANSFORMER,POWER
12497
4720-00-895-9831INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
12498
5330-01-052-1124INTERCHANGEABLE
PACKING,PREFORMED
1249-8
5307-01-157-1946INTERCHANGEABLE
STUD,PLAIN
12497
2590-01-204-8008INTERCHANGEABLE
BUTTON,HORN
12497
6150-01-258-4035INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12497
6150-01-258-4036INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12498
5307-01-267-1214INTERCHANGEABLE
STUD,PLAIN
12498
6145-01-335-3058INTERCHANGEABLE
CABLE,RADIO FREQUENCY
5M2022-003

Frequently Asked Questions

What is NSN 5330-01-125-4370?

NSN 5330-01-125-4370 is a Seal,plain, manufactured by Bal Seal Engineering, Inc., classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-01-125-4370?

NSN 5330-01-125-4370 has 7 cross-referenced part numbers: PL-D-027 PIECE 6 (Aerco International, Inc. Dba Aerco International Inc), S15-226 (Bal Seal Engineering, Inc.), 12739-3 AND 12741-3 (Aerco International, Inc. Dba Aerco International Inc), 12498 (Aerco International, Inc. Dba Aerco International Inc), 201 ITEM 13 (Aerco International, Inc. Dba Aerco International Inc) and 2 more.

What NSN replaces 5330-01-125-4370?

There are 12 known substitutes for 5330-01-125-4370: 5133-00-232-8142, 5975-00-234-3530, 5950-00-438-6522 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S15-226?

Key specifications for S15-226: Material: PLASTIC POLYTETRAFLUOROETHYLENE SEALING ELEMENT; Accommodated Shaft Diameter: 2.250 INCHES NOMINAL IN; Material Document and Classification: QQ-W-423,COMP 302,COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING; Material: STEEL COMP 302 SPRING. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-01-125-4370 still in active supply?

NSN 5330-01-125-4370 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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