PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N-1030Seal

Helle Engineering Inc · NSN 5330-01-121-1249 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-121-1249 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-121-1249. Primary manufacturer part number: N-1030.
Features
  • Seal — FSC 5330
  • 1 verified cross-reference
  • Primary manufacturer: Helle Engineering Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal, cataloged under National Stock Number 5330-01-121-1249, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Helle Engineering Inc. 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.

Catalog Facts
Item NameSeal
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersHelle Engineering Inc (CAGE 34162)
Technical Specifications
ParameterValue
NSN5330-01-121-1249
Primary Part NumberN-1030
Item NameSeal
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerHelle Engineering Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
8040-00-515-2245 INTERCHANGEABLE
Adhesive
5340-00-913-124205333000 INTERCHANGEABLE
Boot,dust and Moisture Seal
Bae Systems Information and Electronic Systems Integration Inc.
5930-01-126-4045N1030 INTERCHANGEABLE
Cover,switch
Bulgin Components Plc
5310-01-226-4392N1030 INTERCHANGEABLE
Nut
Apm Hexseal Corp
5930-01-233-6644N-1030 INTERCHANGEABLE
Boot,dust and Moisture Seal
Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-276-4856N-1030 INTERCHANGEABLE
Boot,dust and Moisture Seal
Phillips Research Corp
3010-01-341-7653N1030 INTERCHANGEABLE
Coupling,shaft,rigid
Palfinger Marine Usa, Llc
Cross-Reference Index
Part NumberManufacturer
N-1030 Helle Engineering Inc (USA)
Related Parts
8040-00-515-2245INTERCHANGEABLE
ADHESIVE
5340-00-913-1242INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
05333000
5930-01-126-4045INTERCHANGEABLE
COVER,SWITCH
N1030
5310-01-226-4392INTERCHANGEABLE
NUT
N1030
5930-01-233-6644INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
N-1030
5340-01-276-4856INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
N-1030
3010-01-341-7653INTERCHANGEABLE
COUPLING,SHAFT,RIGID
N1030

Frequently Asked Questions

What is NSN 5330-01-121-1249?

NSN 5330-01-121-1249 is a Seal, manufactured by Helle Engineering Inc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-121-1249?

NSN 5330-01-121-1249 has 1 cross-referenced part number: N-1030 (Helle Engineering Inc).

What NSN replaces 5330-01-121-1249?

There are 7 known substitutes for 5330-01-121-1249: 8040-00-515-2245, 5340-00-913-1242, 5930-01-126-4045 and 4 more. Verify interchangeability with system specifications before substitution.

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