PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H-18-1Diaphragm,impulse

Leeds and Northrup Co a Unit of General Signal Corp · NSN 4320-01-181-0215 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-181-0215 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-181-0215. Primary manufacturer part number: H-18-1.
Features
  • Diaphragm,impulse — FSC 4320
  • General Characteristics Item Description: RUBBER; 32 DEG MIN,150 DEG MAX TEMPERATURE
  • 1 verified cross-reference
  • Primary manufacturer: Leeds and Northrup Co a Unit of General Signal Corp
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Diaphragm,impulse, cataloged under National Stock Number 4320-01-181-0215, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Leeds and Northrup Co a Unit of General Signal Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-181-0215
Primary Part NumberH-18-1
Item NameDiaphragm,impulse
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerLeeds and Northrup Co a Unit of General Signal Corp
StatusACTIVE
General Characteristics Item DescriptionRUBBER; 32 DEG MIN,150 DEG MAX TEMPERATURE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5999-00-006-5971H181 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Hellermanntyton Limited
5999-00-469-105228682615760 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Ultra Pcs Limited Div Ultra Electronics Precision Air and Land Systems
5305-00-674-8868 INTERCHANGEABLE
Screw,externally Relieved Body
5950-01-018-3073C-181-AH INTERCHANGEABLE
Coil,electrical
Circor Aerospace, Inc. Dba Circor Aerospace Inc
5360-01-334-3444 INTERCHANGEABLE
Spring,helical,extension
7310-01-386-55888923 INTERCHANGEABLE
Decanter,coffee Maker
Bloomfield Industries
2990-01-428-6058H18-1 INTERCHANGEABLE
Diaphragm,governor,engine
Waltron Bull & Roberts, Llc
Cross-Reference Index
Part NumberManufacturer
H-18-1 Leeds and Northrup Co a Unit of General Signal Corp (USA)
Related Parts
5999-00-006-5971INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
H181
5999-00-469-1052INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
28682615760
5305-00-674-8868INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
5950-01-018-3073INTERCHANGEABLE
COIL,ELECTRICAL
C-181-AH
5360-01-334-3444INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
7310-01-386-5588INTERCHANGEABLE
DECANTER,COFFEE MAKER
8923
2990-01-428-6058INTERCHANGEABLE
DIAPHRAGM,GOVERNOR,ENGINE
H18-1

Frequently Asked Questions

What is NSN 4320-01-181-0215?

NSN 4320-01-181-0215 is a Diaphragm,impulse, manufactured by Leeds and Northrup Co a Unit of General Signal Corp, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-181-0215?

NSN 4320-01-181-0215 has 1 cross-referenced part number: H-18-1 (Leeds and Northrup Co a Unit of General Signal Corp).

What NSN replaces 4320-01-181-0215?

There are 7 known substitutes for 4320-01-181-0215: 5999-00-006-5971, 5999-00-469-1052, 5305-00-674-8868 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H-18-1?

Key specifications for H-18-1: End Item Identification: BIF PUMP MODEL 1261-219010A A; General Characteristics Item Description: RUBBER; 32 DEG MIN,150 DEG MAX TEMPERATURE. 2 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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