PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6B3056Seal,plain Encased

Caterpillar Inc Div Caterpillar Defense · NSN 5330-00-641-2326 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-641-2326 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-641-2326. Primary manufacturer part number: 6B3056.
Features
  • Seal,plain Encased — FSC 5330
  • Material: WOOL SEALING ELEMENT A
  • Case Style: SQUARE
  • Material: STEEL CASE
  • Sealing Element Style: VERTICAL-ANGULAR
  • Accommodated Shaft Diameter: 2.125 INCHES NOMINAL IN
  • Housing Bore Diameter: 3.125 INCHES NOMINAL IN
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Wool Sealing Element a construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-641-2326, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5330-00-641-2326
Primary Part Number6B3056
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
MaterialWOOL SEALING ELEMENT A
Case StyleSQUARE
MaterialSTEEL CASE
Sealing Element StyleVERTICAL-ANGULAR
Accommodated Shaft Diameter2.125 INCHES NOMINAL IN
Housing Bore Diameter3.125 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Seal Width0.750 INCHES NOMINAL IN
MaterialLEATHER SEALING ELEMENT B
Surface TreatmentPHOSPHATE CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-068-65102315161 INTERCHANGEABLE
Connector,receptacle,electrical
L3harris Technologies, Inc.
9540-00-287-9426 INTERCHANGEABLE
Channel,structural
2990-00-321-87334369464 INTERCHANGEABLE
Retainer Assy,gover
Agco Corp Parts Opn
5360-00-660-55816047 INTERCHANGEABLE
Spring,helical,compression
Snap-Tite Inc Dba Snap Tite Solenoid Valve Div
2910-00-770-2850C109-46 INTERCHANGEABLE
Bracket W Clamp Asy
Zenith Fuel Systems Llc
5306-00-807-6828 INTERCHANGEABLE
Bolt,machine
4931-01-019-7874MIS-35936/2 INTERCHANGEABLE
Module,plug-in
Us Army Aviation and Missile Command
5331-01-028-8981AS568-256 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5120-01-173-62506047 INTERCHANGEABLE
Adapter,torque Wrench
Wta Tool Llc
5805-01-204-4990 INTERCHANGEABLE
Telephone Terminal Subassembly
Cross-Reference Index
Part NumberManufacturer
6047 Federal-Mogul Corp Chassis Products Div (USA)
6B3056 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5935-00-068-6510INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2315161
9540-00-287-9426INTERCHANGEABLE
CHANNEL,STRUCTURAL
2990-00-321-8733INTERCHANGEABLE
RETAINER ASSY,GOVER
4369464
5360-00-660-5581INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6047
2910-00-770-2850INTERCHANGEABLE
BRACKET W CLAMP ASY
C109-46
5306-00-807-6828INTERCHANGEABLE
BOLT,MACHINE
4931-01-019-7874INTERCHANGEABLE
MODULE,PLUG-IN
MIS-35936/2
5331-01-028-8981INTERCHANGEABLE
O-RING
AS568-256
5120-01-173-6250INTERCHANGEABLE
ADAPTER,TORQUE WRENCH
6047
5805-01-204-4990INTERCHANGEABLE
TELEPHONE TERMINAL SUBASSEMBLY
6625-01-370-1059INTERCHANGEABLE
PROBE,TEST
8145-01-388-3792INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,E
101569

Frequently Asked Questions

What is NSN 5330-00-641-2326?

NSN 5330-00-641-2326 is a Seal,plain Encased, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-641-2326?

NSN 5330-00-641-2326 has 2 cross-referenced part numbers: 6047 (Federal-Mogul Corp Chassis Products Div), 6B3056 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5330-00-641-2326?

There are 12 known substitutes for 5330-00-641-2326: 5935-00-068-6510, 9540-00-287-9426, 2990-00-321-8733 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6B3056?

Key specifications for 6B3056: Material: WOOL SEALING ELEMENT A; Case Style: SQUARE; Material: STEEL CASE; Sealing Element Style: VERTICAL-ANGULAR. 10 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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