PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

218125519Gasket

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 5330-01-721-0975 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-721-0975 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-721-0975. Primary manufacturer part number: 218125519.
Features
  • Gasket — FSC 5330
  • 4 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Gasket, cataloged under National Stock Number 5330-01-721-0975, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGasket
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersElectric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169); Naval Sea Systems Command (CAGE 53711)
Technical Specifications
ParameterValue
NSN5330-01-721-0975
Primary Part Number218125519
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5325-01-720-1072 INTERCHANGEABLE
Ring,retaining
3130-01-722-7839440-8843168-62 INTERCHANGEABLE
Bearing Unit,plain
Naval Sea Systems Command
5305-01-722-8346 INTERCHANGEABLE
Screw,cap,hexagon Head
5330-01-723-0387440-8843168-53 INTERCHANGEABLE
Gasket
Naval Sea Systems Command
5330-01-723-4873845-4677382-40 INTERCHANGEABLE
Packing Assembly
Naval Sea Systems Command
4820-01-723-5993440-8843168-12 INTERCHANGEABLE
Flange,gland,valve
Naval Sea Systems Command
5305-01-729-2627 INTERCHANGEABLE
Screw,cap,hexagon Head
2040-01-734-6226 INTERCHANGEABLE
Cylinder Assembly,reaction
Cross-Reference Index
Part NumberManufacturer
218125519 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
440-8843168-83 Naval Sea Systems Command (USA)
LOA036473-83 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
8843168 Naval Sea Systems Command (USA)
Related Parts
5325-01-720-1072INTERCHANGEABLE
RING,RETAINING
3130-01-722-7839INTERCHANGEABLE
BEARING UNIT,PLAIN
440-8843168-62
5305-01-722-8346INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5330-01-723-0387INTERCHANGEABLE
GASKET
440-8843168-53
5330-01-723-4873INTERCHANGEABLE
PACKING ASSEMBLY
845-4677382-40
4820-01-723-5993INTERCHANGEABLE
FLANGE,GLAND,VALVE
440-8843168-12
5305-01-729-2627INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
2040-01-734-6226INTERCHANGEABLE
CYLINDER ASSEMBLY,REACTION

Frequently Asked Questions

What is NSN 5330-01-721-0975?

NSN 5330-01-721-0975 is a Gasket, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-721-0975?

NSN 5330-01-721-0975 has 4 cross-referenced part numbers: 218125519 (Electric Boat Corporation Div General Dynamics Electric Boat), 440-8843168-83 (Naval Sea Systems Command), LOA036473-83 (Electric Boat Corporation Div General Dynamics Electric Boat), 8843168 (Naval Sea Systems Command).

What NSN replaces 5330-01-721-0975?

There are 8 known substitutes for 5330-01-721-0975: 5325-01-720-1072, 3130-01-722-7839, 5305-01-722-8346 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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