PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

528Diaphragm,valve,flat

Sealco Air Controls Inc · NSN 4820-00-101-5124 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-101-5124 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-101-5124. Primary manufacturer part number: 528.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE
  • 4 verified cross-references
  • Primary manufacturer: Sealco Air Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polytetrafluoroethylene construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-101-5124, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sealco Air Controls Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-101-5124
Primary Part Number528
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSealco Air Controls Inc
StatusACTIVE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5998-00-231-751710182653 INTERCHANGEABLE
Electronic Components Assembly
Raytheon Company Dba Raytheon Co
5935-00-729-87375281 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5998-01-014-5861528-1 INTERCHANGEABLE
Circuit Card Assembly
Marc Alan Group the, Inc
6625-01-042-9758528A OPT 1 INTERCHANGEABLE
Monitor,waveform
Tektronix, Inc.
5950-01-445-69605281 INTERCHANGEABLE
Reactor
Transistor Devices Inc Dba Fernwood Magnetics Div Div Circuitek Division
6625-01-454-96645281 INTERCHANGEABLE
Adapter,test
Fluke Electronics Corp
Cross-Reference Index
Part NumberManufacturer
701536 Sealco Air Controls Inc (USA)
528 PRIMARY Sealco Air Controls Inc (USA)
528-1 Sealco Air Controls Inc (USA)
701536 Dresser, Llc (USA)
Related Parts
5998-00-231-7517INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
10182653
5935-00-729-8737INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5281
5998-01-014-5861INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
528-1
6625-01-042-9758INTERCHANGEABLE
MONITOR,WAVEFORM
528A OPT 1
5950-01-445-6960INTERCHANGEABLE
REACTOR
5281
6625-01-454-9664INTERCHANGEABLE
ADAPTER,TEST
5281

Frequently Asked Questions

What is NSN 4820-00-101-5124?

NSN 4820-00-101-5124 is a Diaphragm,valve,flat, manufactured by Sealco Air Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-101-5124?

NSN 4820-00-101-5124 has 4 cross-referenced part numbers: 701536 (Sealco Air Controls Inc), 528 (Sealco Air Controls Inc), 528-1 (Sealco Air Controls Inc), 701536 (Dresser, Llc).

What NSN replaces 4820-00-101-5124?

There are 6 known substitutes for 4820-00-101-5124: 5998-00-231-7517, 5935-00-729-8737, 5998-01-014-5861 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 528?

Key specifications for 528: Material: PLASTIC POLYTETRAFLUOROETHYLENE. 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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