PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1K6981Seal,plain Encased

Caterpillar Inc Div Caterpillar Defense · NSN 5330-00-290-1012 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-290-1012 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-290-1012. Primary manufacturer part number: 1K6981.
Features
  • Seal,plain Encased — FSC 5330
  • Accommodated Shaft Diameter: 2.000 INCHES NOMINAL IN
  • Outside Diameter: 2.690 INCHES NOMINAL IN
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Material: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
  • Surface Treatment: PLASTIC CASE
  • Seal Width: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
  • Housing Bore Diameter: 2.686 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Leather or Rubber Synthetic Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-290-1012, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 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
NSN5330-00-290-1012
Primary Part Number1K6981
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Accommodated Shaft Diameter2.000 INCHES NOMINAL IN
Outside Diameter2.690 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
MaterialLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
Surface TreatmentPLASTIC CASE
Seal Width0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
Housing Bore Diameter2.686 INCHES NOMINAL IN
Case StyleSQUARE
Sealing Element StyleANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2810-00-118-409619778 INTERCHANGEABLE
Gear Assy
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5330-00-292-1633 INTERCHANGEABLE
Seal,plain Encased
5330-00-599-212619653 INTERCHANGEABLE
Packing,preformed
Western Sky Industries Inc Dba Electromech Techologies
2940-01-010-894542682 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
4720-01-047-23592-682 INTERCHANGEABLE
Hose Assembly,nonmetallic
Maytag Corporation Dba Maytag Appliancessales
5998-01-115-608826-8-2 INTERCHANGEABLE
Holder,printed Circuit Board
Bircher Co Inc the
5945-01-162-0953 INTERCHANGEABLE
Relay,hybrid
2530-01-171-7063 INTERCHANGEABLE
Parts Kit,brake Chamber
2530-01-176-9609 INTERCHANGEABLE
Brake Lining Kit
5915-01-302-3244JN10-203A1 INTERCHANGEABLE
Filter,low Pass
Ems Development Corporation Dba Ems Development Corp
Cross-Reference Index
Part NumberManufacturer
1K6981 Interxion Real Estate Xx (FRA)
2682 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
19778 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
8C9133 Caterpillar Inc Div Caterpillar Defense (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
1K6981 Joint Metalloplastique Francais (le) Sa (FRA)
1K6981 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
1K6981 William Adams Pty Ltd (AUS)
1K6981 Hastings Deering (aust) Pty Ltd (AUS)
1K6981 Westrac Pty Ltd (AUS)
Related Parts
2810-00-118-4096INTERCHANGEABLE
GEAR ASSY
19778
5330-00-292-1633INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-599-2126INTERCHANGEABLE
PACKING,PREFORMED
19653
2940-01-010-8945INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42682
4720-01-047-2359INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
2-682
5998-01-115-6088INTERCHANGEABLE
HOLDER,PRINTED CIRCUIT BOARD
26-8-2
5945-01-162-0953INTERCHANGEABLE
RELAY,HYBRID
2530-01-171-7063INTERCHANGEABLE
PARTS KIT,BRAKE CHAMBER
2530-01-176-9609INTERCHANGEABLE
BRAKE LINING KIT
5915-01-302-3244INTERCHANGEABLE
FILTER,LOW PASS
JN10-203A1
5975-01-445-6260INTERCHANGEABLE
STUFFING TUBE
13229E0753-1
5920-01-468-8098INTERCHANGEABLE
FUSE,CARTRIDGE
0FLM005.T

Frequently Asked Questions

What is NSN 5330-00-290-1012?

NSN 5330-00-290-1012 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 5330-00-290-1012?

NSN 5330-00-290-1012 has 10 cross-referenced part numbers: 1K6981 (Interxion Real Estate Xx), 2682 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 19778 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 8C9133 (Caterpillar Inc Div Caterpillar Defense), 00044 (Defense Logistics Agency Dba Defense Supply Center Philadelphia) and 5 more.

What NSN replaces 5330-00-290-1012?

There are 12 known substitutes for 5330-00-290-1012: 2810-00-118-4096, 5330-00-292-1633, 5330-00-599-2126 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1K6981?

Key specifications for 1K6981: Accommodated Shaft Diameter: 2.000 INCHES NOMINAL IN; Outside Diameter: 2.690 INCHES NOMINAL IN; Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT; Material: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT. 9 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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