PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M552Seal,plain Encased

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 5330-00-154-8328 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-154-8328 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-154-8328. Primary manufacturer part number: M552.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: ANGULAR
  • Housing Bore Diameter: 3.500 INCHES NOMINAL IN
  • Case Style: SQUARE
  • Material: LEATHER SEALING ELEMENT
  • Material: STEEL CASE
  • Accommodated Shaft Diameter: 2.500 INCHES NOMINAL IN
  • Seal Width: 0.500 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Leather Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-154-8328, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-154-8328
Primary Part NumberM552
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusCANCELLED
Sealing Element StyleANGULAR
Housing Bore Diameter3.500 INCHES NOMINAL IN
Case StyleSQUARE
MaterialLEATHER SEALING ELEMENT
MaterialSTEEL CASE
Accommodated Shaft Diameter2.500 INCHES NOMINAL IN
Seal Width0.500 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2990-00-012-2557 INTERCHANGEABLE
Flange,exhaust Pipe
5110-00-223-1084 INTERCHANGEABLE
Chisel,floor
5330-00-285-5958 INTERCHANGEABLE
Seal,plain Encased
6220-00-292-628268B818040-117 INTERCHANGEABLE
Panel,indicating,light Transmitt
The Boeing Company Div Defense
6105-00-308-9032 INTERCHANGEABLE
Winding,motor Field
5930-00-396-6111M552 INTERCHANGEABLE
Switch,rotary
Cole Hersee Company
5950-00-430-544655147 INTERCHANGEABLE
Coil,electrical
Spirax Sarco Inc Dba Spirax Sarco
5995-00-491-4407 INTERCHANGEABLE
Cable Assembly,radio Frequency
5940-00-583-5959012-2000-00-0-479 INTERCHANGEABLE
Terminal,feedthru
Itt Cannon Rf Products
5815-00-600-3022SM-C-171510 INTERCHANGEABLE
Bar,guide,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
M552 H20 Tank Inc U S Motors Div (USA)
55147 Federal-Mogul Corp Chassis Products Div (USA)
350216 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
M552 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
M552 Skf Usa Inc. (USA)
Related Parts
2990-00-012-2557INTERCHANGEABLE
FLANGE,EXHAUST PIPE
5110-00-223-1084INTERCHANGEABLE
CHISEL,FLOOR
5330-00-285-5958INTERCHANGEABLE
SEAL,PLAIN ENCASED
6220-00-292-6282INTERCHANGEABLE
PANEL,INDICATING,LIGHT TRANSMITT
68B818040-117
6105-00-308-9032INTERCHANGEABLE
WINDING,MOTOR FIELD
5930-00-396-6111INTERCHANGEABLE
SWITCH,ROTARY
M552
5950-00-430-5446INTERCHANGEABLE
COIL,ELECTRICAL
55147
5995-00-491-4407INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
5940-00-583-5959INTERCHANGEABLE
TERMINAL,FEEDTHRU
012-2000-00-0-479
5815-00-600-3022INTERCHANGEABLE
BAR,GUIDE,TELETYPEWRITER
SM-C-171510
5895-01-052-1342INTERCHANGEABLE
FILTER DRIVER
M552
5950-01-330-6646INTERCHANGEABLE
REACTOR
M552

Frequently Asked Questions

What is NSN 5330-00-154-8328?

NSN 5330-00-154-8328 is a Seal,plain Encased, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-154-8328?

NSN 5330-00-154-8328 has 5 cross-referenced part numbers: M552 (H20 Tank Inc U S Motors Div), 55147 (Federal-Mogul Corp Chassis Products Div), 350216 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), M552 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), M552 (Skf Usa Inc.).

What NSN replaces 5330-00-154-8328?

There are 12 known substitutes for 5330-00-154-8328: 2990-00-012-2557, 5110-00-223-1084, 5330-00-285-5958 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M552?

Key specifications for M552: Sealing Element Style: ANGULAR; Housing Bore Diameter: 3.500 INCHES NOMINAL IN; Case Style: SQUARE; Material: LEATHER SEALING ELEMENT. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-154-8328 still in active supply?

NSN 5330-00-154-8328 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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