PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MX-1554A/USeal,radio Frequency Transmissio

Joint Electronics Type Designation System · NSN 5985-00-723-4628 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-723-4628 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-723-4628. Primary manufacturer part number: MX-1554A/U.
Features
  • Seal,radio Frequency Transmissio — FSC 5985
  • Precious Material and Weight: 0.100 SILVER GRAINS, TROY
  • Material: COPPER ALLOY
  • Surface Treatment: SILVER
  • Transmission Line Opening Diameter: 0.437 INCHES NOMINAL IN
  • Mounting Method: SLIP-ON
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Precious Material: SILVER
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Copper Alloy construction
General Description

The Seal,radio Frequency Transmissio, cataloged under National Stock Number 5985-00-723-4628, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Joint Electronics Type Designation System. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-723-4628
Primary Part NumberMX-1554A/U
Item NameSeal,radio Frequency Transmissio
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusACTIVE
Precious Material and Weight0.100 SILVER GRAINS, TROY
MaterialCOPPER ALLOY
Surface TreatmentSILVER
Transmission Line Opening Diameter0.437 INCHES NOMINAL IN
Mounting MethodSLIP-ON
Overall Diameter0.750 INCHES NOMINAL IN
Precious MaterialSILVER
Precious Material and LocationBODY SURFACE SILVER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-035-789323-521 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
2810-00-118-902523521 INTERCHANGEABLE
Piston,internal Combustion Engin
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5950-00-648-540323521 INTERCHANGEABLE
Transformer,power
L3harris Technologies, Inc Div Space & Airborne Systems
5940-00-784-304910-910-2 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
3010-00-824-268423521 INTERCHANGEABLE
Coupling,shaft,flexible
Senior Operations Llc Dba Metal Bellows Div Metal Bellows
5340-00-854-018823521 INTERCHANGEABLE
Standoff,threaded,spacing
Hamilton Sundstrand Corporation Dba Collins Aerospace
5940-00-855-624710056109 INTERCHANGEABLE
Adapter,radio Frequency Cable
Us Army Aviation and Missile Command
5950-01-072-994612282754 INTERCHANGEABLE
Transformer,power
U S Army Tank Automotive Command Amsta-Im-Mm
5998-01-220-2243 INTERCHANGEABLE
Circuit Card Assembly
5950-01-348-9868 INTERCHANGEABLE
Transformer,power
Cross-Reference Index
Part NumberManufacturer
MX-1554A/U Winchester Interconnect Rf Corporation (USA)
MX-1554A/U PRIMARY Joint Electronics Type Designation System (USA)
2352-1 Microwave Devices Inc (USA)
FXR20950 Amphenol Corporation Div Amphenol Rf (USA)
REB49144 Naval Ship Systems Command (USA)
Related Parts
5999-00-035-7893INTERCHANGEABLE
CONTACT,ELECTRICAL
23-521
2810-00-118-9025INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
23521
5950-00-648-5403INTERCHANGEABLE
TRANSFORMER,POWER
23521
5940-00-784-3049INTERCHANGEABLE
TERMINAL,STUD
10-910-2
3010-00-824-2684INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
23521
5340-00-854-0188INTERCHANGEABLE
STANDOFF,THREADED,SPACING
23521
5940-00-855-6247INTERCHANGEABLE
ADAPTER,RADIO FREQUENCY CABLE
10056109
5950-01-072-9946INTERCHANGEABLE
TRANSFORMER,POWER
12282754
5998-01-220-2243INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5950-01-348-9868INTERCHANGEABLE
TRANSFORMER,POWER
5310-01-382-5020INTERCHANGEABLE
NUT,PLAIN,HEXAGON
23521
6130-01-442-4090INTERCHANGEABLE
BATTERY POWER SUPPLY
23521

Frequently Asked Questions

What is NSN 5985-00-723-4628?

NSN 5985-00-723-4628 is a Seal,radio Frequency Transmissio, manufactured by Joint Electronics Type Designation System, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-723-4628?

NSN 5985-00-723-4628 has 5 cross-referenced part numbers: MX-1554A/U (Winchester Interconnect Rf Corporation), MX-1554A/U (Joint Electronics Type Designation System), 2352-1 (Microwave Devices Inc), FXR20950 (Amphenol Corporation Div Amphenol Rf), REB49144 (Naval Ship Systems Command).

What NSN replaces 5985-00-723-4628?

There are 12 known substitutes for 5985-00-723-4628: 5999-00-035-7893, 2810-00-118-9025, 5950-00-648-5403 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MX-1554A/U?

Key specifications for MX-1554A/U: Precious Material and Weight: 0.100 SILVER GRAINS, TROY; Material: COPPER ALLOY; Surface Treatment: SILVER; Transmission Line Opening Diameter: 0.437 INCHES NOMINAL IN. 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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