MDC Vacuum

Engineered Process Solutions


Insulating Materials

Insulator Seal, for over 30 years, has created a catalog of nearly 20,000 solutions for dissimilar material joints used in harsh environments. And this set of solutions continues to grow as the ISI technical staff, with a collective 100 years of design experience, addresses new designs every day. In fact, over 25% of all active projects are entirely new. A full two-thirds of all products are not “standard” but have been designed or co-developed by Insulator Seal in recent years. These applications range from temperatures as low as -269ºC to as high as 1,000ºC from pressures as low as 10-15 atm to greater than 103 atm; from air-conditioned laboratories to down-hole petroleum drilling operations; from two sub-sea miles to the depths of Martian space.

A representative list of materials with which Insulator Seal has experience is provided below. Technology is constantly advancing; and, meeting environmental challenges can be critical to the success of your design. If materials of interest are not listed here, please contact Insulator Seal directly to discuss your application.

Dielectric and Crystalline Materials Commonly Sealed by Insulator Seal
Sapphire (crystalline Al2O3)
Alumina (85-99.9% Al2O3)
Yttria Stabilized Zirconia (YSZ – Y2O-Zr02)
ZTA (ZrO2 – Al2O3)
Quartz (crystalline SiO2)
Fused Silica (amorphous SiO2)
Aluminum Nitride (AlN)
Silicon Nitride (Si3N4)
Zinc Selenide (ZnSe)
Zinc Sulfide (ZnS)
Cleartran™ (multi-spectral ZnS)
Calcium Fluoride (CaF2)
Magnesium Fluoride (MgF2)
Glass (Schott ™ BK-7)

For questions on our sealing capabilities, Ask Our Experts

Electrical Feedthroughs 

RF Power
Breaks & Envelopes

Fused Silica
Zero Profile 7056 Glass
Weldable Pyrex
Viewport Shields
Fluid Feedthroughs

General Purpose with Swagelok
General Purpose with VCR

Liquid Nitrogen with Swagelok

Liquid Nitrogen with VCR
Glass Components

Double Ended
Sealed Off

Glass to Metal bellow Adapters

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