PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18403Seat,valve

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 4820-01-075-7351 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-075-7351 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-075-7351. Primary manufacturer part number: 18403.
Features
  • Seat,valve — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Circor Aerospace, Inc. Dba Circor Aerospace Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-075-7351, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersCircor Aerospace, Inc. Dba Circor Aerospace Inc (CAGE 91816)
Technical Specifications
ParameterValue
NSN4820-01-075-7351
Primary Part Number18403
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5950-00-055-359218-400 INTERCHANGEABLE
Coil,radio Frequency
Albert Frei & Sons, Inc. Dba Afs
6110-00-073-62931456-626 INTERCHANGEABLE
Protector,thermal-Overload,elect
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5950-00-676-742718400 INTERCHANGEABLE
Transformer,audio Frequency
Astec America Inc.
1430-00-938-441318400 INTERCHANGEABLE
Housing Assembly
Gyrus Acmi L.p. Dba Circon-Acmi Div
5940-01-077-6417 INTERCHANGEABLE
Terminal,quick Disconnect
5325-01-278-9545184-00 INTERCHANGEABLE
Ring,retaining
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5996-01-295-167218400 INTERCHANGEABLE
Amplifier,radio Frequency
Applied Systems Engineering Inc
5120-01-529-0655ACT407 INTERCHANGEABLE
Straightener,fin
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
6515-01-587-61694119068 INTERCHANGEABLE
Adapter,oxygen Supply
Draeger Inc
6515-01-595-926718403 INTERCHANGEABLE
Bag,ostomy
Hollister Inc
Cross-Reference Index
Part NumberManufacturer
18400 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
18400 ITEM 18 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
P53-433 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
18403 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
5950-00-055-3592INTERCHANGEABLE
COIL,RADIO FREQUENCY
18-400
6110-00-073-6293INTERCHANGEABLE
PROTECTOR,THERMAL-OVERLOAD,ELECT
1456-626
5950-00-676-7427INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
18400
1430-00-938-4413INTERCHANGEABLE
HOUSING ASSEMBLY
18400
5940-01-077-6417INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
5325-01-278-9545INTERCHANGEABLE
RING,RETAINING
184-00
5996-01-295-1672INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
18400
5120-01-529-0655INTERCHANGEABLE
STRAIGHTENER,FIN
ACT407
6515-01-587-6169INTERCHANGEABLE
ADAPTER,OXYGEN SUPPLY
4119068
6515-01-595-9267INTERCHANGEABLE
BAG,OSTOMY
18403
5935-01-641-1956INTERCHANGEABLE
ADAPTER,CONNECTOR

Frequently Asked Questions

What is NSN 4820-01-075-7351?

NSN 4820-01-075-7351 is a Seat,valve, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-075-7351?

NSN 4820-01-075-7351 has 4 cross-referenced part numbers: 18400 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 18400 ITEM 18 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), P53-433 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 18403 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 4820-01-075-7351?

There are 11 known substitutes for 4820-01-075-7351: 5950-00-055-3592, 6110-00-073-6293, 5950-00-676-7427 and 8 more. Verify interchangeability with system specifications before substitution.

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