keyboard_arrow_up

Sealed Coil Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading sealed coil manufacturers and suppliers. Access our comprehensive index to review and source sealed coil manufacturers with preview ads and detailed product descriptions. These sealed coil companies can design, engineer and manufacture sealed coils to your specifications and application needs. A quick and easy to use request for quote form is provided for you to contact these manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether it’s for a manufacturer of magnetic coils, electromagnetic coils, or voice coils.

  • Sag Harbor, NY 800-724-5952

    We are proud of the craftsmanship of our engineers. All of our products are made right here in the United States and we promise that these items are created from high quality resources. Our electrical coils are unique and efficient. We are dedicated to manufacturing the best coils around. Our teams utilize sophisticated to procedures to develop these top notch electrical coils. Give us a call today to learn more information!

    Read Reviews
  • Bristol, CT 800-825-4319

    Established in 1973, Classic Coil Company is a Contract Manufacturer of electronic coils. We manufacture coils for a variety of industries; winding wire gauges from 4-58 AWG. We are ISO 9001-2015 certified, ITAR registered and DFARS Compliant. Our Engineering services allow us to assist with design, reduce cost, and increase efficiency in production. Call or visit our website to learn more about our capabilities.

    Read Reviews
  • Bristol, CT 860-584-0927

    We are an ISO 9001:2015 certified company which is internationally known for manufacturing high quality electromagnetic-coils. It is our goal to provide quality products, a commitment to speedy delivery, and competitive pricing. We understand that every application is unique, so we encourage you to contact us to discuss your specific requirements. Call us at 1-860-584-0927 and find out what our 50+ years of experience can do for you.

    Read Reviews
  • Alpha, NJ 800-867-3526

    Since 1962, Torelco has been a supplier of electric coils and transformers of superior quality. We offer custom coils, solenoid coils, ferrite core coils & toroid wound coils to serve a range of industries. Markets served include medical, military, electronics, and industrial. When you work with us, our promise is to build to the exact specifications and meet the custom needs of our customers.

    Read Reviews
  • Antigo, WI 800-826-9741

    Johnson Electric Coil Company is a family owned manufacturer that specializes in custom transformers, coils and inductors. From three phase isolation transformers to single phase inductors and chokes, we carefully design our products to meet your exact specifications. Our experienced engineers are available to assist during every step of the process. Let Johnson make great parts for you!

    Read Reviews
  • More Sealed Coils Companies

businessIndustry Information

Sealed Coils

A common part of any electronic device is the coil that assists in creating the energy for the motor. The types of coils used in a motor vary depending on the application the motor is being used for and the amount of current needed. In simple terms, a coil is wire that is tightly wound such that the wires overlap to form a cylinder. This technique increases the amount of force that is produced by using the multiple windings of the wire.

Coils are made of various forms of wire that have high conductivity, are ductile, and easy to form into a variety of configurations. A necessary part of a coil is its insulation, which is designed to prevent current from passing between the overlapping wires. For the greatest amount of protection, coils have insulation but are dipped and baked in an extra material that completely seals the coil. This type of process creates a sealed coil.


What is a Sealed Coil?

As the name implies, a sealed coil is an electric coil that has been sealed by some form of material, which can be a polymer resin or some type of rubber. Though a coil may have insulation, sealing it offers an extra layer of protection as well as insulation. The biggest advantage to a sealed coil is the assurance that it is totally protected against moisture.

One of the problems that needs to be avoided with a coil is the accumulation of heat that can damage the coil and cause excessive wear. The various materials that are used to seal a coil are designed to increase heat transfer and keep the coil cool. This particular feature is one of the reasons that sealed coils are an excellent addition to an electric motor.


Materials Used to Seal a Coil

There are several varieties of materials that are used in the production of a sealed coil. One such material is epoxy, which provides thermal stability and resistance to moisture, chemicals, vibration, and impact. An extra feature of epoxy is its gap filling capabilities. Every coil, when it is wound, leaves gaps. For the greatest efficiency, the gaps need to be filled, which is easily done with sealing materials, such as epoxy.

Silicon resin has all of the properties of epoxy with the additional ability to resist a wide range of temperatures. It is impregnated as a sealant into electronic coils as a filler and insulation.

Polymer resin is used as a sealant for its ability to solidify windings and laminations as well as dampen noise and lessen the influence of vibrations in high speed and spindle applications. One of the main benefits of using a polymer resin is how it converts into a rigid material once it has been cured.


Uses for Sealed Coils

The purpose of sealing a coil is to prevent it from being damaged by intrusive factors such as moisture and random electrical charges. The added sealing material offers the benefit of a front line against damage to the coil.

Coils that are wells sealed are normally found in environments that have harsh conditions such as inclement weather and emersion in water. The high resistance of the sealing material and its protective qualities ensures the life span of use of the coil.