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Toroids

Eastern Voltage Research is proud to offer the most beautiful seamless spun aluminum toroids available anywhere in the world.  We offer some of the most popular sizes for Tesla coils, high voltage dividers, and other high voltage equipment.  We also have tooling to produce more than 75 different sizes of toroids ranging from 3" to 98" in diameter.  All of our spun aluminum toroids are spun using grade 1000-O (99% pure) aluminum with a welded seam that is extremely smooth and completely invisible. 

The sizes featured here are some of the more popular sizes that generally fit a wide range of applications from small to medium size Tesla coils, high voltage dividers, and other high voltage terminals.

We also carry a full line of corona spheres and spark gap electrodes.

Please contact our sales department for custom toroid quotes.

Click here for a complete list of our custom toroid sizes. (PDF)

  • 12" Aluminum Toroid

    12" Aluminum Toroid

    12" Aluminum Toroid Mounting hole for 1/4" hardware Dimensions:  12" x 3" Special note:  This is a machine stamped toroid with a visible seam.  This toroid is a more economical alternative to hobbyists than our spun aluminum seamless...

    $139.99
    Add to Cart
  • 18" Aluminum Toroid

    18" x 4.5" Aluminum Toroid, Seamless

    18" x 9" x 4.5" Aluminum Toroid, Seamless This heavy duty, seamless toroid is the one used in our Plasmasonic 1.3, Reference Design 1.0, and Best DIY 6.0 Tesla coils.  It is made of 99% pure (grade 1100-O) aluminum, heavy duty, and welded with no...

    $349.99
    Add to Cart
  • 30" x 16" Spun Aluminum Toroid for Tesla Coils and High Voltage Applications

    30" x 7" Aluminum Toroid, Seamless

    30" x 16" x 7" Aluminum Toroid, Seamless This heavy duty, seamless toroid is the one used in our Plasmasonic 2.0, Reference Design 2.0, and Best DIY 12.0 Tesla coils.  It is made of 99% pure (grade 1100-O) aluminum, heavy duty, and welded with no...

  • Aluminum Toroid, 36" x 16" x 10", Seamless for Tesla Coils

    36" x 10" Aluminum Toroid, Seamless

    36" x 16" x 10" Aluminum Toroid, Seamless This heavy duty, seamless toroid is the one used in our Plasmasonic 3.0 and Reference Design 3.0 systems.  It is made of 99% pure (grade 1100-O) aluminum, heavy duty, and welded with no visible seam. ...

  • 6" Plastic Toroid 6" Plastic Toroid

    6" Toroid

    6" Plastic Toroid These are plastic toroid forms and are excellent for small Tesla Coils and Van de Graaf generators.  Simply cover the plastic toroid with adhesive aluminum tape (available at your local hardware store) and you have a very...

    $9.99
    Add to Cart
  • 8" Aluminum Toroid

    8" Aluminum Toroid

    8" Aluminum Toroid Mounting hole for 1/4" hardware Dimensions:  8" x 2.25" This toroid is used in our Plasmasonic CW plasma speaker kit. Special note:  This is a machine stamped toroid with a visible seam.  This toroid is a more economical...

    $99.99
    Add to Cart
  • Custom aluminum toroids

    Custom Aluminum Toroids

    Eastern Voltage Research has tooling on hand to manufacturer a wide variety of aluminum toroids from 3" diameter up to 98" in diameter.  These toroids are all made from heavy guage 99% pure (1100-O) aluminum, and are welded with no visible seam...

    $0.00
    Add to Cart