PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7B8320Seal,plain Encased

Caterpillar Inc Div Caterpillar Defense · NSN 5330-00-154-4839 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-154-4839 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-154-4839. Primary manufacturer part number: 7B8320.
Features
  • Seal,plain Encased — FSC 5330
  • 11 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-154-4839, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameSeal,plain Encased
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersMarine Engine Specialties Div of Mesco Tectonics Inc (CAGE 16460); Fairbanks Morse, Llc (CAGE 7PZX0); Lear Siegler Inc Sherwood Div (CAGE 54641); Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Napco International Llc Dba Napco International Inc (CAGE 95201)
Technical Specifications
ParameterValue
NSN5330-00-154-4839
Primary Part Number7B8320
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3120-00-126-4517H556C INTERCHANGEABLE
Bushing,sleeve
Siemens Energy, Inc.
5331-00-171-5371KS1321 INTERCHANGEABLE
O-Ring
Minor Rubber Co Inc
5331-00-291-327399-4113-229 INTERCHANGEABLE
O-Ring
Hamilton Sundstrand Corporation
3040-00-329-10534065-3 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
5330-00-399-6935VT3394 INTERCHANGEABLE
Gasket
Cnh Industrial America Llc Dba Cnh America
5360-00-449-2693 INTERCHANGEABLE
Spring,helical,compression
5950-00-482-370511229 INTERCHANGEABLE
Reactor
Freed Transformer Co
5136-00-580-7356 INTERCHANGEABLE
Tap,thread Cutting
2835-00-753-1442379854 INTERCHANGEABLE
Filter Element
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
6105-00-830-992011229 INTERCHANGEABLE
Motor,alternating Current
Elbitamerica, Inc.
Cross-Reference Index
Part NumberManufacturer
11229 Marine Engine Specialties Div of Mesco Tectonics Inc (USA)
40653 Fairbanks Morse, Llc (USA)
4424 Lear Siegler Inc Sherwood Div (USA)
7B8320 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
4424 Marine Engine Specialties Div of Mesco Tectonics Inc (USA)
40653 Napco International Llc Dba Napco International Inc (USA)
SB4424 Agco Corp Parts Opn (USA)
H10288-21 Cummins Inc. (USA)
10288-21 Cummins Inc. (USA)
15028K Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
40653 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
Related Parts
3120-00-126-4517INTERCHANGEABLE
BUSHING,SLEEVE
H556C
5331-00-171-5371INTERCHANGEABLE
O-RING
KS1321
5331-00-291-3273INTERCHANGEABLE
O-RING
99-4113-229
3040-00-329-1053INTERCHANGEABLE
CONNECTING LINK,RIGID
4065-3
5330-00-399-6935INTERCHANGEABLE
GASKET
VT3394
5360-00-449-2693INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5950-00-482-3705INTERCHANGEABLE
REACTOR
11229
5136-00-580-7356INTERCHANGEABLE
TAP,THREAD CUTTING
2835-00-753-1442INTERCHANGEABLE
FILTER ELEMENT
379854
6105-00-830-9920INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
11229
5940-00-920-7114INTERCHANGEABLE
COVER,TERMINAL BOARD
5950-00-984-1111INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME

Frequently Asked Questions

What is NSN 5330-00-154-4839?

NSN 5330-00-154-4839 is a Seal,plain Encased, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-154-4839?

NSN 5330-00-154-4839 has 11 cross-referenced part numbers: 11229 (Marine Engine Specialties Div of Mesco Tectonics Inc), 40653 (Fairbanks Morse, Llc), 4424 (Lear Siegler Inc Sherwood Div), 7B8320 (Caterpillar Inc Div Caterpillar Defense), 4424 (Marine Engine Specialties Div of Mesco Tectonics Inc) and 6 more.

What NSN replaces 5330-00-154-4839?

There are 12 known substitutes for 5330-00-154-4839: 3120-00-126-4517, 5331-00-171-5371, 5331-00-291-3273 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 5330-00-154-4839 still in active supply?

NSN 5330-00-154-4839 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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