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

    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!

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  • Bristol, CT

    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.

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  • Alpha, NJ

    Since 1962, Torelco LLC 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.

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  • North Fort Myers, FL

    Check out what’s new online at Precision Econowind, manufacturer of the highest quality custom coils at reasonable prices, with on time delivery. Serving the coil industry for over 30 years, we’re experienced with producing loudspeaker & medical industry coils, coils wound on customers’ bobbins/tooling; freestanding, flat wire, edge wound, square, rectangle & shaped coils. Submit your specs today!

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  • Winsted, CT

    At Dufrane Technologies, we take pride in our extensive range of electric coils. Our comprehensive product portfolio encompasses a wide variety of coil types, including solenoid coils, electromagnet coils, induction coils, and more. Whether you require custom-made coils or standard options, we have the expertise and resources to fulfill your specifications with precision.

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Sealed Coils Industry Information

Sealed Coils

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.

Quick links to Sealed Coils Information

Applications of 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 immersion in water. The high resistance of the sealing material and its protective qualities ensures the life span of the coil.

Sealed Coil Design and Function

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 so that the wires overlap to form a cylinder. This technique increases the amount of force 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.

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.