PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M440Seal,plain Encased

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 5330-00-810-8482 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-810-8482 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-810-8482. Primary manufacturer part number: M440.
Features
  • Seal,plain Encased — FSC 5330
  • Accommodated Shaft Maximum Rated Speed: 3000 FEET PER MINUTE FT
  • Case Style: SQUARE
  • Sealing Element Style: ANGULAR
  • Material: STEEL CASE
  • Accommodated Shaft Diameter: 3.375 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Temp Rating: -30.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Case construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-810-8482, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-810-8482
Primary Part NumberM440
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusCANCELLED
Accommodated Shaft Maximum Rated Speed3000 FEET PER MINUTE FT
Case StyleSQUARE
Sealing Element StyleANGULAR
MaterialSTEEL CASE
Accommodated Shaft Diameter3.375 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Temp Rating-30.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF
Housing Bore Diameter4.381 INCHES NOMINAL IN
Seal Width0.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
3110-00-156-5042GK169C INTERCHANGEABLE
Bearing,ball,annular
Yale Security Inc. Dba Norton Door Control
5330-00-325-2566M440 INTERCHANGEABLE
Seal,oil
H20 Tank Inc U S Motors Div
7050-01-063-3279M440 INTERCHANGEABLE
Multiplier,analog Computer
Intronics Power Inc. Dba Intronics Inc
Cross-Reference Index
Part NumberManufacturer
455164N Federal-Mogul Corp Government Sales Dept (USA)
310511R91 Navistar International Corporation Dba Navistar (USA)
310511R91 Komatsu American Intl Co (USA)
279751R92 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
279751R92 Komatsu American Intl Co (USA)
279751R92 Navistar International Corporation Dba Navistar (USA)
310525R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
310511R91 Komatsu America Corp. (USA)
310525R91 Komatsu American Intl Co (USA)
M440 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
310525R91 Navistar International Corporation Dba Navistar (USA)
310511R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
310511R91 Federal-Mogul Corp Government Sales Dept (USA)
Related Parts
3110-00-156-5042INTERCHANGEABLE
BEARING,BALL,ANNULAR
GK169C
5330-00-325-2566INTERCHANGEABLE
SEAL,OIL
M440
7050-01-063-3279INTERCHANGEABLE
MULTIPLIER,ANALOG COMPUTER
M440

Frequently Asked Questions

What is NSN 5330-00-810-8482?

NSN 5330-00-810-8482 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 5330-00-810-8482?

NSN 5330-00-810-8482 has 14 cross-referenced part numbers: 455164N (Federal-Mogul Corp Government Sales Dept), 310511R91 (Navistar International Corporation Dba Navistar), 310511R91 (Komatsu American Intl Co), 279751R92 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 279751R92 (Komatsu American Intl Co) and 9 more.

What NSN replaces 5330-00-810-8482?

There are 3 known substitutes for 5330-00-810-8482: 3110-00-156-5042, 5330-00-325-2566, 7050-01-063-3279. Verify interchangeability with system specifications before substitution.

What are the specifications of M440?

Key specifications for M440: Accommodated Shaft Maximum Rated Speed: 3000 FEET PER MINUTE FT; Case Style: SQUARE; Sealing Element Style: ANGULAR; Material: STEEL CASE. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-810-8482 still in active supply?

NSN 5330-00-810-8482 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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