PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7686Boot,dust and Moisture Seal

Plastic Dip Moldings Inc · NSN 5340-01-578-1221 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-578-1221 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-578-1221. Primary manufacturer part number: 7686.
Features
  • Boot,dust and Moisture Seal — FSC 5340
  • 7 verified cross-references
  • Primary manufacturer: Plastic Dip Moldings Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-01-578-1221, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Plastic Dip Moldings Inc. This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameBoot,dust and Moisture Seal
FSC / FSG5340 — No Item Name Available (FSG 53)
ManufacturersElectric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169); Naval Sea Systems Command (CAGE 53711); Plastic Dip Moldings Inc (CAGE 6D0J1)
Technical Specifications
ParameterValue
NSN5340-01-578-1221
Primary Part Number7686
Item NameBoot,dust and Moisture Seal
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerPlastic Dip Moldings Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 8
5945-00-114-98247686 INTERCHANGEABLE
Relay,thermal
Kurz & Root Generator Company, Llc
5940-00-223-529638ENSIGN7686 INTERCHANGEABLE
Post,binding,electrical
Eby Group, Llc, the Dba Eby Company Div Eby Company
3120-00-516-19327686 INTERCHANGEABLE
Bearing,sleeve
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5340-00-598-00679975846-5 INTERCHANGEABLE
Clamp,loop
Us Army Aviation and Missile Command
4730-00-852-8758FIG1742-100 INTERCHANGEABLE
Union,pipe
Flagg Stanley G & Co Inc Dba Flagg Brass
5962-01-010-9189SN74273N INTERCHANGEABLE
Microcircuit,digital
Texas Instruments Incorporated
5985-01-078-6821768A-6 INTERCHANGEABLE
Attenuator,fixed
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
5310-01-464-1161 INTERCHANGEABLE
Washer,shouldered
Cross-Reference Index
Part NumberManufacturer
H751-0511-89 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
223-8216641-5 Naval Sea Systems Command (USA)
H751-0514-5 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
7686 PRIMARY Plastic Dip Moldings Inc (USA)
PDM-7686 Plastic Dip Moldings Inc (USA)
H7510514A-5 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
223-8216644-89 Naval Sea Systems Command (USA)
Related Parts
5945-00-114-9824INTERCHANGEABLE
RELAY,THERMAL
7686
5940-00-223-5296INTERCHANGEABLE
POST,BINDING,ELECTRICAL
38ENSIGN7686
3120-00-516-1932INTERCHANGEABLE
BEARING,SLEEVE
7686
5340-00-598-0067INTERCHANGEABLE
CLAMP,LOOP
9975846-5
4730-00-852-8758INTERCHANGEABLE
UNION,PIPE
FIG1742-100
5962-01-010-9189INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SN74273N
5985-01-078-6821INTERCHANGEABLE
ATTENUATOR,FIXED
768A-6
5310-01-464-1161INTERCHANGEABLE
WASHER,SHOULDERED

Frequently Asked Questions

What is NSN 5340-01-578-1221?

NSN 5340-01-578-1221 is a Boot,dust and Moisture Seal, manufactured by Plastic Dip Moldings Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-578-1221?

NSN 5340-01-578-1221 has 7 cross-referenced part numbers: H751-0511-89 (Electric Boat Corporation Div General Dynamics Electric Boat), 223-8216641-5 (Naval Sea Systems Command), H751-0514-5 (Electric Boat Corporation Div General Dynamics Electric Boat), 7686 (Plastic Dip Moldings Inc), PDM-7686 (Plastic Dip Moldings Inc) and 2 more.

What NSN replaces 5340-01-578-1221?

There are 8 known substitutes for 5340-01-578-1221: 5945-00-114-9824, 5940-00-223-5296, 3120-00-516-1932 and 5 more. Verify interchangeability with system specifications before substitution.

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