Glass to Glass | Glass to Metal | Preforms

Tubular glass-metal seals of the Kovar-Pyrex type are produced in a range of sizes from 1/8″ to 6″. The glass to metal seal is a matched seal in which kodial glass is sealed directly to an iron-nickel-cobalt alloy (Kovar) tube having a similar coefficient of expansion, a graded seal then being fabricated to Pyrex glass. Extended seals are also produced with a quartz termination and non-standard diameters are available by forming the 'Kovar' sleeve from sheet material. Seals can also be supplied, welded into vacuum flanges. Using special and unique techniques, Glass Dynamics LLC provides a wide range of glass to metal products. For custom quotation and engineering support with absolute individual service please contact

Kovar Sealing: Schott® 8250 | Kimble® EN-1 | Oxi-Glass HT-202-1

Key Notes:

  • Glass to Glass
  • Glass to Metal
  • Glass to Sapphire
  • Graded Glass (Quartz to Pyrex)
  • Customized Graded Glass
  • Highest quality of glass products
  • Myriad of product and process capabilities
  • Short or Long Production Runs
  • Globally competitive pricing
  • Personalized customer service
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