Sealing Glass Tubing and Rods

SCHOTT Sealing Glass Tubing and Rods possess a number of physical and chemical properties that make them ideal for sealing to metals, alloys and ceramics in a vast range of applications. With a global reach and deep material knowledge, SCHOTT provides sealing solutions for a wide variety of industries and sectors.

Series of clear glass tubes of different diameters

Sealing compatibility beyond the conventional

SCHOTT’s range of sealing glasses offers the potential to broaden the range of materials that glass can be bonded with. For instance, glass types 8250 and 8245 are both directly sealable to Kovar, while sealing with tungsten and ceramics is also possible. This opens up exciting possibilities in fields ranging from medical technology to the lighting industry.

New possibilities for graded seal glass rods

SCHOTT offers an extensive portfolio of graded seal glass rods formerly made by TRANSITION GLASS PRODUCTS LTD. (TGP), and now oversees the production process with the expertise we are globally renowned for. This further expands the range of quartz sealing glasses suitable for applications such as flash lamps manufacturing.

Product variants

The capabilities of SCHOTT sealing glasses continue to grow, and we offer a number of product variants defined according to their bonding compatibility with metals and alloys, as well as other glasses. In all cases, the high quality of the glass with its tight geometrical tolerances results in facile processing and enables robust sealing.

More about Variants

Two clear glass tubes for the manufacture of halogen lamps

Technical properties for proven performance

Across all glass types, SCHOTT Sealing Glass Tubing and Rods achieve impressive technical specifications, proving their credentials for direct gas-tight and stable sealing solutions with metals, alloys, glass, ceramics, and more. Our customers can achieve 3D hot forming at relatively low temperatures in automated processes, but also deliver in very high temperature environments, with excellent electrical insulation achieved by all products.