PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81641Seal,piston Relay Valve

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 5330-00-129-9453 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-129-9453 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-129-9453. Primary manufacturer part number: 81641.
Features
  • Seal,piston Relay Valve — FSC 5330
  • 5 verified cross-references
  • Primary manufacturer: Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Circuit control and protection
  • Equipment power management
General Description

The Seal,piston Relay Valve, cataloged under National Stock Number 5330-00-129-9453, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-129-9453
Primary Part Number81641
Item NameSeal,piston Relay Valve
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5315-01-422-5819 INTERCHANGEABLE
Pin,straight,headless
6145-01-469-999383004 INTERCHANGEABLE
Wire,electrical
General Cable Corporation Div Corporate
3130-01-613-617781641 INTERCHANGEABLE
Bearing Unit,plain
Tulsa Winch, Inc.
5340-01-678-704581641 INTERCHANGEABLE
Hardware Kit,mechanic Equipment
Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
Part NumberManufacturer
VV122 General Signal Corp (USA)
VV122 Eaton Aerospace, Llc Dba Jackson South (USA)
19-8-3231 Ecolaire Inc Baldwin-Hamilton Co Div (USA)
81641 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
VV122 Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
5315-01-422-5819INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
6145-01-469-9993INTERCHANGEABLE
WIRE,ELECTRICAL
83004
3130-01-613-6177INTERCHANGEABLE
BEARING UNIT,PLAIN
81641
5340-01-678-7045INTERCHANGEABLE
HARDWARE KIT,MECHANIC EQUIPMENT
81641

Frequently Asked Questions

What is NSN 5330-00-129-9453?

NSN 5330-00-129-9453 is a Seal,piston Relay Valve, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-129-9453?

NSN 5330-00-129-9453 has 5 cross-referenced part numbers: VV122 (General Signal Corp), VV122 (Eaton Aerospace, Llc Dba Jackson South), 19-8-3231 (Ecolaire Inc Baldwin-Hamilton Co Div), 81641 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), VV122 (Eaton Aerospace, Llc Dba Jackson South).

What NSN replaces 5330-00-129-9453?

There are 4 known substitutes for 5330-00-129-9453: 5315-01-422-5819, 6145-01-469-9993, 3130-01-613-6177 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81641?

Key specifications for 81641: End Item Identification: 22105540785. 1 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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