PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50012Seal,plain Encased

Federal-Mogul Corp Government Sales Dept · NSN 5330-00-998-3261 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-998-3261 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-998-3261. Primary manufacturer part number: 50012.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: ANGULAR
  • Accommodated Shaft Diameter: 0.438 INCHES NOMINAL IN
  • Case Style: SQUARE
  • Seal Width: 0.375 INCHES NOMINAL IN
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Material: LEATHER SEALING ELEMENT
  • Material: STEEL CASE
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 5330-00-998-3261, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal-Mogul Corp Government Sales Dept. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, 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
NSN5330-00-998-3261
Primary Part Number50012
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerFederal-Mogul Corp Government Sales Dept
StatusACTIVE
Sealing Element StyleANGULAR
Accommodated Shaft Diameter0.438 INCHES NOMINAL IN
Case StyleSQUARE
Seal Width0.375 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
MaterialLEATHER SEALING ELEMENT
MaterialSTEEL CASE
Housing Bore Diameter1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1650-00-048-350712514 INTERCHANGEABLE
Plunger,detent
Mid-America Aerotech, Llc
7510-00-067-7167 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3040-00-071-6739 INTERCHANGEABLE
Shaft,drive,eccentr
2915-00-091-42151251-4 INTERCHANGEABLE
Sleeve Assembly,fuel Valve
Rocker Solenoid Co Dba Rocker Solenoid Co
2240-00-129-617312514 INTERCHANGEABLE
Valve,valve,brake
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
5330-00-171-931012514 INTERCHANGEABLE
Seal,plain Encased
Garwood/feller Inc Garwood Winch Div
5935-00-540-9066ST5M1302-001 INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company Div Defense
5310-00-721-590212514 INTERCHANGEABLE
Washer,flat
Cummins Power Generation Inc.
5935-00-798-57461251-0074 INTERCHANGEABLE
Connector,receptacle,electrical
Keysight Technologies Inc
5935-01-010-1106150450-0000 INTERCHANGEABLE
Connector,receptacle,electrical
Itt Cannon Llc
Cross-Reference Index
Part NumberManufacturer
50012 Federal-Mogul Corp Government Sales Dept (USA)
12514 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
CND2538A2 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
50012 Federal-Mogul Corp Sealing Products Group Van Wert Plant (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
00044 TY 1 CASE TY 2B ELEMENT Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
CND2538A2 Fairbanks Morse, Llc (USA)
Related Parts
1650-00-048-3507INTERCHANGEABLE
PLUNGER,DETENT
12514
7510-00-067-7167INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
3040-00-071-6739INTERCHANGEABLE
SHAFT,DRIVE,ECCENTR
2915-00-091-4215INTERCHANGEABLE
SLEEVE ASSEMBLY,FUEL VALVE
1251-4
2240-00-129-6173INTERCHANGEABLE
VALVE,VALVE,BRAKE
12514
5330-00-171-9310INTERCHANGEABLE
SEAL,PLAIN ENCASED
12514
5935-00-540-9066INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1302-001
5310-00-721-5902INTERCHANGEABLE
WASHER,FLAT
12514
5935-00-798-5746INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1251-0074
5935-01-010-1106INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
150450-0000
5340-01-015-0929INTERCHANGEABLE
STRAP,RETAINING
125-1-4
5935-01-068-9380INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1348TS4B

Frequently Asked Questions

What is NSN 5330-00-998-3261?

NSN 5330-00-998-3261 is a Seal,plain Encased, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-998-3261?

NSN 5330-00-998-3261 has 7 cross-referenced part numbers: 50012 (Federal-Mogul Corp Government Sales Dept), 12514 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), CND2538A2 (Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine), 50012 (Federal-Mogul Corp Sealing Products Group Van Wert Plant), 00044 (Defense Logistics Agency Dba Defense Supply Center Philadelphia) and 2 more.

What NSN replaces 5330-00-998-3261?

There are 12 known substitutes for 5330-00-998-3261: 1650-00-048-3507, 7510-00-067-7167, 3040-00-071-6739 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50012?

Key specifications for 50012: Sealing Element Style: ANGULAR; Accommodated Shaft Diameter: 0.438 INCHES NOMINAL IN; Case Style: SQUARE; Seal Width: 0.375 INCHES NOMINAL IN. 8 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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