PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M201191Seal,plain Encased

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 5330-00-294-0791 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-294-0791 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-294-0791. Primary manufacturer part number: M201191.
Features
  • Seal,plain Encased — FSC 5330
  • Housing Bore Diameter: 6.250 INCHES MINIMUM AND 6.256 INCHES MAXIMUM IN
  • Accommodated Shaft Diameter: 5.000 INCHES NOMINAL IN
  • Seal Width: 0.563 INCHES NOMINAL IN
  • Case Style: SQUARE
  • Material: RUBBER BUTADIENE NITRILE SEALING ELEMENT
  • Sealing Element Style: ANGULAR
  • Surface Treatment: PLASTIC CASE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene Nitrile Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-294-0791, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-294-0791
Primary Part NumberM201191
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusCANCELLED
Housing Bore Diameter6.250 INCHES MINIMUM AND 6.256 INCHES MAXIMUM IN
Accommodated Shaft Diameter5.000 INCHES NOMINAL IN
Seal Width0.563 INCHES NOMINAL IN
Case StyleSQUARE
MaterialRUBBER BUTADIENE NITRILE SEALING ELEMENT
Sealing Element StyleANGULAR
Surface TreatmentPLASTIC CASE
Outside Diameter6.256 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5120-01-601-517449966 INTERCHANGEABLE
Extension,socket Wrench
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
M201191 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
49966 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
455070RRR Federal-Mogul Corp Government Sales Dept (USA)
455070RAR PRIMARY Federal-Mogul Corp Government Sales Dept (USA)
Related Parts
5120-01-601-5174INTERCHANGEABLE
EXTENSION,SOCKET WRENCH
49966

Frequently Asked Questions

What is NSN 5330-00-294-0791?

NSN 5330-00-294-0791 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 5330-00-294-0791?

NSN 5330-00-294-0791 has 4 cross-referenced part numbers: M201191 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 49966 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 455070RRR (Federal-Mogul Corp Government Sales Dept), 455070RAR (Federal-Mogul Corp Government Sales Dept).

What NSN replaces 5330-00-294-0791?

There is 1 known substitute for 5330-00-294-0791: 5120-01-601-5174. Verify interchangeability with system specifications before substitution.

What are the specifications of M201191?

Key specifications for M201191: Housing Bore Diameter: 6.250 INCHES MINIMUM AND 6.256 INCHES MAXIMUM IN; Accommodated Shaft Diameter: 5.000 INCHES NOMINAL IN; Seal Width: 0.563 INCHES NOMINAL IN; Case Style: SQUARE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-294-0791 still in active supply?

NSN 5330-00-294-0791 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.
PartsTable Design LLC · partstable.com