1. Specialty Seal Group (SSG) ceramic-to-metal and glass-to-metal seals give top performance in the harshest environments.

    Whether you need industrial heaters, power cables, or other high heat or power sources to operate with maximum efficiency, SSG has a custom or standard solution that’s ideal.

    All SSG seals are vacuum-tight and offer the necessary resistance to heat, abrasion, chemicals, oil, grease, moisture, toxic fumes and more.

    We attach metals to seals through a variety of brazing and soldering techniques which we use based on your specific application.

    Ceramic to metal seal

  2. Metal Selection

    Airplane Flying that uses hermetic seals

    Selecting the Best Metal for Your Application

    Choosing the type of metal to combine with either ceramic or glass components in a hermetic seal involves factors such as temperature, pressure, magnetism, atmosphere and size.  All of those variables influence the design and production of any ceramic-to-metal seal or glass-to-metal seal.  At Specialty Seal Group, our technology incorporates these metals in our seals:

    • Copper
    • Nickel
    • Monel
    • Nickel-Iron Alloys
    • Brass
    • Bronze
    • Molybdenum
    • Stainless Steel
    • Steel
    • Kovar

    Metal components can be pre-plated or post-plated.

    Thermal Expansion Plays Significant Role in Metal Selection

    Nuclear Power Plant with Hermetic Seals

    When choosing a metal for your particular application, the difference in thermal expansion between the metal selected and the ceramic must take precedence above all other considerations.  If incompatible choices are necessary for other project requirements, Specialty Seal Group can produce innovative designs that allow for expansion or stress relaxation.

    1. 1001 Lloyd Avenue
    2. Latrobe, PA 15650
    3. P: 724.539.1626
    4. F: 724.539.2540