PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7B2051Seal,plain Encased

Caterpillar Inc Div Caterpillar Defense · NSN 5330-00-641-2169 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-641-2169 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-641-2169. Primary manufacturer part number: 7B2051.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: ANGULAR
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Housing Bore Diameter: 3.351 INCHES NOMINAL IN
  • Material: STEEL CASE
  • Material: LEATHER SEALING ELEMENT
  • Case Style: RECESSED
  • Seal Width: 1.250 INCHES NOMINAL IN
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 5330-00-641-2169, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-641-2169
Primary Part Number7B2051
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Sealing Element StyleANGULAR
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Housing Bore Diameter3.351 INCHES NOMINAL IN
MaterialSTEEL CASE
MaterialLEATHER SEALING ELEMENT
Case StyleRECESSED
Seal Width1.250 INCHES NOMINAL IN
Accommodated Shaft Diameter2.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5360-00-360-8018116183 INTERCHANGEABLE
Spring,helical,compression
Am General Llc
3120-00-662-8383 INTERCHANGEABLE
Bearing,sleeve
5330-00-710-6029 INTERCHANGEABLE
Gasket
3110-00-769-14264TL68111 INTERCHANGEABLE
Cup,tapered Roller Bearing
Ntn Bearing Corporation of America
5640-01-304-4030 INTERCHANGEABLE
Insulation Sleeving,thermal
5310-01-305-3825 INTERCHANGEABLE
Washer Assortment
7025-01-329-63986157 INTERCHANGEABLE
Tape Adapter
International Business Machines Corp Parts Order Center Dept E - 54
6080-01-524-2021 INTERCHANGEABLE
Splicing Kit,fiber Optic Cable
4730-01-532-22456157 INTERCHANGEABLE
Fitting,lubricant Pressure Relie
Popper & Sons, Inc.
Cross-Reference Index
Part NumberManufacturer
6157 Federal-Mogul Corp Government Sales Dept (USA)
7B2051 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
6157 Federal-Mogul Corp Chassis Products Div (USA)
9400A Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
5360-00-360-8018INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
116183
3120-00-662-8383INTERCHANGEABLE
BEARING,SLEEVE
5330-00-710-6029INTERCHANGEABLE
GASKET
3110-00-769-1426INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
4TL68111
5640-01-304-4030INTERCHANGEABLE
INSULATION SLEEVING,THERMAL
5310-01-305-3825INTERCHANGEABLE
WASHER ASSORTMENT
7025-01-329-6398INTERCHANGEABLE
TAPE ADAPTER
6157
6080-01-524-2021INTERCHANGEABLE
SPLICING KIT,FIBER OPTIC CABLE
4730-01-532-2245INTERCHANGEABLE
FITTING,LUBRICANT PRESSURE RELIE
6157

Frequently Asked Questions

What is NSN 5330-00-641-2169?

NSN 5330-00-641-2169 is a Seal,plain Encased, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-641-2169?

NSN 5330-00-641-2169 has 4 cross-referenced part numbers: 6157 (Federal-Mogul Corp Government Sales Dept), 7B2051 (Caterpillar Inc Div Caterpillar Defense), 6157 (Federal-Mogul Corp Chassis Products Div), 9400A (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5330-00-641-2169?

There are 9 known substitutes for 5330-00-641-2169: 5360-00-360-8018, 3120-00-662-8383, 5330-00-710-6029 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7B2051?

Key specifications for 7B2051: Sealing Element Style: ANGULAR; Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT; Housing Bore Diameter: 3.351 INCHES NOMINAL IN; Material: STEEL CASE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-641-2169 still in active supply?

NSN 5330-00-641-2169 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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