Kovar® Tubing

Also known as Sealvar®, 29/17, ASTM F15 or Rodar®, Kovar® tubing is an iron nickel cobalt alloy that has a similar coefficient of expansion to hard borosilicate glass, such as Pyrex®, and some ceramics.

It is often used in electronics, microwave or power tubes, lighting, and in other components where an excellent hermetic seal is required. American Tube Technology is a 29/17 iron nickel cobalt alloy glass sealing tube supplier. Contact us for your Kovar® tubing needs.