Electric Motor Applications

The Gund Company is a manufacturer and fabricator of engineered material solutions for electric motor applications. The type of motor, the voltage utilized, the temperature rating, and the power are some of the main design criteria that dictate the insulation used in the electric motor. The Gund Company offers a variety of insulation components for the following areas of electric motors:

  • Rotors: The rotor is the moving component of the electromagnetic system in the electric motor. Its rotation is due to the interaction between the stator windings and the magnetic fields, which produce torque around the rotor’s axis and mechanical power to the shaft.
  • Stators: The stator is the stationary part of a rotary system and utilizes the incoming power to apply electromotive forces to move the rotor.

Electric Motor Insulation

Insulation components for electric motors have to be precisely measured, machined, and installed. The Gund Company employs expert staff to run our state-of-the-art fabrication equipment. Coupled with our rigorous Quality Assurance program and in-process inspections, The Gund Company can offer our customers high-quality products that meet the electric motor market’s challenging application demands.

AC Motor Stator Insulation

  • Topsticks
  • Wedges
  • Filler Strips
  • Phase Separators
  • Slot Liners
  • Tapes
  • Tie Cord
  • Lead Wire Insulation
  • Terminal Boards
  • Lead Clamps
  • End Winding Support Rings
  • End Winding Support Blocks
  • Felt
  • End Baffles


AC Motor Rotor Insulation



DC Stator Insulation



DC Armature Insulation

  • Topsticks
  • Wedges
  • Slot Filler
  • Slot Liners
  • Felts
  • Commutator Mica Segments
  • Lead Wire Insulation
  • Banding Tape



  • Mica HD
  • Mica V-Rings
  • Binding Tape



Other Motor Insulation Components


Our custom fabricated parts are manufactured according to ISO 9001: 2015 certified quality systems. We take a consultative engineering approach to help our customers determine the best material options for their AC and DC electric motor applications. This results in engineered components that meet or exceed the demanding mechanical and electrical requirements of the application and major OEMs.

Simply provide your part’s operating parameters, function, and operating environment, and we will help you determine the best material options for your application. The Gund Company also offers various specialty materials used in electric motor insulation applications, including magnetic laminates, semi-conductive laminates, flexible laminates, and tapes. Contact one of our electric motor material specialists to review your application and material requirements.

Common Rigid Insulation Materials in Motors
Rigid Insulation      
Mica M G-3, PFGC 201 G-9, MFGC 201
Mica HD G-11, EPGC 203 GPO-3, UPGM 203
G-10, EPGC 201 Class F GPO-1, UPGM 201 Class H GPO-1, UPGM 201
C, CE, LE, PFCC 201/202/204 N155 N180
Class R GPO-1, UPGM 201 H755 EMD Grades
Top Ripple Spring T160 N220
Side Ripple Spring FR4, EPGC 202 SG200
Semi-Conductive Laminate: C109 MagNohl® HST II
Click here to view additional material datasheets.
Common Flexible Insulation Materials in Motors
Flexible Insulation
Dacron®/Mylar®/Dacron® (DMD) Polyester PET Film
G-Flex Aramid with Metastar® Vulcanized Fibre
Nomex® Meta-Aramid Papers Epoxy Coated Nomex®
Rag/Mylar®, Rag/Mylar®/Rag (RMR) Nomex®/Mylar®/Nomex® (NMN)
Kapton® tape PTFE Tape
Click here to view additional material datasheets.
Common Elastomeric Materials in Motors
Neoprene Cork/Rubber
Nitrile EPDM
Silicone FKM (Viton®)
Butyl Sponge
Click here to view additional material datasheets.

Additionally, The Gund Company also offers a wide variety of elastomeric materials for all your O-ring and gasket needs.

The Gund Company is a vertically integrated manufacturer and fabricator of engineered material solutions. Since 1951, we have listened to our customers and learned about their industries’ demanding operating environments. We are AS9100D Certified and ITAR Compliant. Our custom fabricated parts are manufactured according to ISO 9001:2015 certified quality systems.

We understand the challenges of material selection and the demanding operating environment of your application. Our Application Engineering Team takes a consultative approach to understand your requirements. By relying on our material specialists, our customers gain valuable insight into improving component designs to increase efficiency and functionality while reducing cost. In addition to helping with material selection, we challenge ourselves to optimize production for material yield or fabrication efficiency. As a lean enterprise, we focus on continuous improvement and finding the most cost-effective, efficient solutions for our customers.

Please contact us today if we can help answer material property questions or provide an application-specific quote. Thank you for the opportunity to earn your business.

manufacturer and fabricator of motor applications

manufacturer and fabricator of motor applications