What is Glass-to-Metal Sealing?

Glass-to-Metal Sealing is a process designed to produce a hermetic (airtight/vacuum-tight) seal between components by thermal processing in an atmosphere conducive to creating an oxide layer on the metal surface. This chemical interaction produces a strong bond with the (molten) glass than can exist by purely mechanical means. Two types of seals are common: compression seals, in which the outer member has the highest expansion factor and the inner components have a slightly lower expansion factor, or match seals, where all components have somewhat similar expansion factors.*

Gasbarre specializes in the design and manufacture of custom-engineered glass-to-metal sealing furnaces specific to the thermal processing industry.

Gasbarre furnaces are:

built to rigorous standards using advanced technologies and materials
reliable, providing years of operation at process temperature extremes
configurable with features and options to meet your specific needs
backed by superior customer service and a promise that our technical staff will work with you to configure a glass-to-metal sealing furnace that will not only satisfy your needs, but exceed your expectations!

Gasbarre’s complete line of Glass-to-Metal Furnaces is listed below.

Continuous Mesh Belt

Gasbarre is a leading manufacturer of Continuous Mesh Belt Furnaces, and will custom-design to your particular specifications.

View Mesh Belt Furnaces

Continuous Mesh Belt – Solitaire

This C.I. Hayes furnace is known for its compact design and for its popularity for brazing and bright annealing of jewelry pieces.

View Solitaire Furnaces

*Source: Daniel H. Herring, “The Heat Treat Doctor.” The HERRING GROUP, Inc.