PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15779Seal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-00-021-3859 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-021-3859 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-021-3859. Primary manufacturer part number: 15779.
Features
  • Seal,plain Encased — FSC 5330
  • Outside Diameter: 2.879 INCHES NOMINAL IN
  • Accommodated Shaft Diameter: 1.563 INCHES NOMINAL IN
  • Surface Treatment: PLASTIC CASE
  • Material: PLASTIC ACRYLIC SEALING ELEMENT A
  • Seal Width: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
  • Temp Rating: 300.0 CELSIUS DEGC
  • Material: PLASTIC ACRYLIC SEALING ELEMENT B
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Plastic Acrylic Sealing Element a construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-021-3859, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Skf Usa Inc. Dba Skf Aerospace Sealing Solutions. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-021-3859
Primary Part Number15779
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusACTIVE
Outside Diameter2.879 INCHES NOMINAL IN
Accommodated Shaft Diameter1.563 INCHES NOMINAL IN
Surface TreatmentPLASTIC CASE
MaterialPLASTIC ACRYLIC SEALING ELEMENT A
Seal Width0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
Temp Rating300.0 CELSIUS DEGC
MaterialPLASTIC ACRYLIC SEALING ELEMENT B
Sealing Element StyleANGULAR-OPPOSED
Housing Bore Diameter2.875 INCHES NOMINAL IN
Case StyleSQUARE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-1865 INTERCHANGEABLE
Ring,top,actuator
5950-00-043-0331805174-1 INTERCHANGEABLE
Transformer,power
Honeywell International, Inc Div Aerospace-Tucson
6210-00-054-460215778 INTERCHANGEABLE
Light,indicator
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
4820-00-083-423015778 INTERCHANGEABLE
Disk,valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5935-00-103-762530-086-3 INTERCHANGEABLE
Connector,plug,electrical
Bell Textron Inc
3455-00-516-315117613 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5895-00-824-590215779 INTERCHANGEABLE
Logic and Tape Motion Assembly
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
3455-00-971-890817614 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5342-01-063-523444-15778 INTERCHANGEABLE
Bracket,temperature Sending
Wheeler Fleet Solutions, Co.
6220-01-063-9321 INTERCHANGEABLE
Light Panel
Cross-Reference Index
Part NumberManufacturer
15778 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
15779 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
4820-00-036-1865INTERCHANGEABLE
RING,TOP,ACTUATOR
5950-00-043-0331INTERCHANGEABLE
TRANSFORMER,POWER
805174-1
6210-00-054-4602INTERCHANGEABLE
LIGHT,INDICATOR
15778
4820-00-083-4230INTERCHANGEABLE
DISK,VALVE
15778
5935-00-103-7625INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
30-086-3
3455-00-516-3151INTERCHANGEABLE
CUTTER,MILLING,END
17613
5895-00-824-5902INTERCHANGEABLE
LOGIC AND TAPE MOTION ASSEMBLY
15779
3455-00-971-8908INTERCHANGEABLE
CUTTER,MILLING,END
17614
5342-01-063-5234INTERCHANGEABLE
BRACKET,TEMPERATURE SENDING
44-15778
6220-01-063-9321INTERCHANGEABLE
LIGHT PANEL
5365-01-186-9039INTERCHANGEABLE
PLUG,MACHINE THREAD
13888 PIECE 14
5340-01-408-3803INTERCHANGEABLE
TURNBUCKLE BODY
15779

Frequently Asked Questions

What is NSN 5330-00-021-3859?

NSN 5330-00-021-3859 is a Seal,plain Encased, manufactured by Skf Usa Inc. Dba Skf Aerospace Sealing Solutions, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-021-3859?

NSN 5330-00-021-3859 has 2 cross-referenced part numbers: 15778 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 15779 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5330-00-021-3859?

There are 12 known substitutes for 5330-00-021-3859: 4820-00-036-1865, 5950-00-043-0331, 6210-00-054-4602 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15779?

Key specifications for 15779: Outside Diameter: 2.879 INCHES NOMINAL IN; Accommodated Shaft Diameter: 1.563 INCHES NOMINAL IN; Surface Treatment: PLASTIC CASE; Material: PLASTIC ACRYLIC SEALING ELEMENT A. 10 total characteristics are documented in the Federal Logistics Information System.

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