PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5S9021Seal,plain Encased

Caterpillar Inc Div Caterpillar Defense · NSN 5330-00-520-1339 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-520-1339 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-520-1339. Primary manufacturer part number: 5S9021.
Features
  • Seal,plain Encased — FSC 5330
  • 3 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 5330-00-520-1339, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeal,plain Encased
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersDana Automotive Systems Group, Llc Dba Dana Sealing Products (CAGE 79150); Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (CAGE 80201)
Technical Specifications
ParameterValue
NSN5330-00-520-1339
Primary Part Number5S9021
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4330-00-030-2022 INTERCHANGEABLE
Filter,fluid
5133-00-189-9315 INTERCHANGEABLE
Drill,twist
5360-00-292-364525085 INTERCHANGEABLE
Spring,helical,compression
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5310-00-596-7710 INTERCHANGEABLE
Washer,spring Tension
5365-00-962-264025085-2 INTERCHANGEABLE
Ring,rotor
Solar Turbines Incorporated Dba Solar Turbines Incorporated
4730-01-204-514525085 INTERCHANGEABLE
Plug,pipe
Twg Canada Consolidated Inc
4820-01-237-7021601-25-3075 INTERCHANGEABLE
Valve,linear,directional Control
Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems
5998-01-345-1528 INTERCHANGEABLE
Printed Circuit Board
6750-01-354-067025085 INTERCHANGEABLE
Paper,photographic
Far West Micrographix Inc
5315-01-438-794011-031Z INTERCHANGEABLE
Pin,straight,headed
Medalist-Rein Leitzke
Cross-Reference Index
Part NumberManufacturer
62884M Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
5S9021 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
25085 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
4330-00-030-2022INTERCHANGEABLE
FILTER,FLUID
5133-00-189-9315INTERCHANGEABLE
DRILL,TWIST
5360-00-292-3645INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
25085
5310-00-596-7710INTERCHANGEABLE
WASHER,SPRING TENSION
5365-00-962-2640INTERCHANGEABLE
RING,ROTOR
25085-2
4730-01-204-5145INTERCHANGEABLE
PLUG,PIPE
25085
4820-01-237-7021INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
601-25-3075
5998-01-345-1528INTERCHANGEABLE
PRINTED CIRCUIT BOARD
6750-01-354-0670INTERCHANGEABLE
PAPER,PHOTOGRAPHIC
25085
5315-01-438-7940INTERCHANGEABLE
PIN,STRAIGHT,HEADED
11-031Z

Frequently Asked Questions

What is NSN 5330-00-520-1339?

NSN 5330-00-520-1339 is a Seal,plain Encased, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-520-1339?

NSN 5330-00-520-1339 has 3 cross-referenced part numbers: 62884M (Dana Automotive Systems Group, Llc Dba Dana Sealing Products), 5S9021 (Caterpillar Inc Div Caterpillar Defense), 25085 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5330-00-520-1339?

There are 10 known substitutes for 5330-00-520-1339: 4330-00-030-2022, 5133-00-189-9315, 5360-00-292-3645 and 7 more. Verify interchangeability with system specifications before substitution.

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