PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11943ASeal,plain Encased

Brinkley Technology Group Llc Dba Hercules Manufacturing · NSN 5330-00-177-9721 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-177-9721 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-177-9721. Primary manufacturer part number: 11943A.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: ANGULAR
  • Case Style: SQUARE
  • Accommodated Shaft Diameter: 1.000 INCHES NOMINAL IN
  • Housing Bore Diameter: 1.437 INCHES NOMINAL IN
  • Material: STEEL CASE
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Seal Width: 0.391 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 5330-00-177-9721, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 32 commercial cross-references from 16 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-177-9721
Primary Part Number11943A
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerBrinkley Technology Group Llc Dba Hercules Manufacturing
StatusCANCELLED
Sealing Element StyleANGULAR
Case StyleSQUARE
Accommodated Shaft Diameter1.000 INCHES NOMINAL IN
Housing Bore Diameter1.437 INCHES NOMINAL IN
MaterialSTEEL CASE
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Seal Width0.391 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-0592209MBK1 INTERCHANGEABLE
Cup,tapered Roller Bearing
Linde Material Handling North America Corporation
5950-00-130-1472674-0123-010 INTERCHANGEABLE
Transformer,power
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
3110-00-156-1865 INTERCHANGEABLE
Bearing,ball,thrust
5136-00-156-3026 INTERCHANGEABLE
Chasers,thread Cutting
5110-00-180-0939 INTERCHANGEABLE
Punch,cutting,single Bow
5133-00-222-9470 INTERCHANGEABLE
Drill,twist
3110-00-227-2872 INTERCHANGEABLE
Bearing,roller,needle
1710-00-256-4336 INTERCHANGEABLE
Pad,impact
5330-00-285-1345 INTERCHANGEABLE
Seal,plain Encased
5330-00-285-3331 INTERCHANGEABLE
Seal,plain Encased
Cross-Reference Index
Part NumberManufacturer
914534 Sasco Inc Canadian Div
11943A Hercules Engine Co Inc (USA)
1431 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
11943A PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
74R261 Oshkosh Defense Llc (USA)
BHW5A2 PRIMARY Iwc Llc Dba Ideal Windlass Company (USA)
51414 Federal-Mogul Corp Chassis Products Div (USA)
82401DSPC11943A Hercules Engine Co Inc (USA)
82401DSPC11943A PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
143G1 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
60242 PRIMARY Iwc Llc Dba Ideal Windlass Company (USA)
515 Marley Pump Co Div of the Marley Co Red Jacket Pumps Dept (USA)
81566PC11943A PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
60242 PRIMARY Patterson Pump Co Div Patterson Pump Company (USA)
49368 Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
500020 CAGE 00000
48667 Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
60812C75 PRIMARY Patterson Pump Co Div Patterson Pump Company (USA)
43-885 Federal-Mogul Corp Sealing Products Group Van Wert Plant (USA)
74R261 Oshkosh Corp (USA)
Related Parts
3110-00-100-0592INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
209MBK1
5950-00-130-1472INTERCHANGEABLE
TRANSFORMER,POWER
674-0123-010
3110-00-156-1865INTERCHANGEABLE
BEARING,BALL,THRUST
5136-00-156-3026INTERCHANGEABLE
CHASERS,THREAD CUTTING
5110-00-180-0939INTERCHANGEABLE
PUNCH,CUTTING,SINGLE BOW
5133-00-222-9470INTERCHANGEABLE
DRILL,TWIST
3110-00-227-2872INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
1710-00-256-4336INTERCHANGEABLE
PAD,IMPACT
5330-00-285-1345INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-285-3331INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-286-6829INTERCHANGEABLE
SEAL,PLAIN ENCASED
1-955
5330-00-286-6851INTERCHANGEABLE
SEAL,PLAIN ENCASED
60480

Frequently Asked Questions

What is NSN 5330-00-177-9721?

NSN 5330-00-177-9721 is a Seal,plain Encased, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-177-9721?

NSN 5330-00-177-9721 has 32 cross-referenced part numbers: 914534 (Sasco Inc Canadian Div), 11943A (Hercules Engine Co Inc), 1431 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 11943A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 74R261 (Oshkosh Defense Llc) and 27 more.

What NSN replaces 5330-00-177-9721?

There are 12 known substitutes for 5330-00-177-9721: 3110-00-100-0592, 5950-00-130-1472, 3110-00-156-1865 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11943A?

Key specifications for 11943A: Sealing Element Style: ANGULAR; Case Style: SQUARE; Accommodated Shaft Diameter: 1.000 INCHES NOMINAL IN; Housing Bore Diameter: 1.437 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-177-9721 still in active supply?

NSN 5330-00-177-9721 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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