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SCHOTT Pyran® vs. SCHOTT Robax® – Ceramic/Glass


ROBAX® is a transparent ceramic fireplace glass manufactured by SCHOTT. It is extremely heart-resistant and sturdy and displays a very low thermal expansion. ROBAX’s temperature stability, transparency, heat transmission and long life span make it an excellent choice in comparison to conventional flat glass where thermal shock and shifts in temperature are present, making it a perfect selection for protection from fire hazards.



  • High resistance to heat up to 700ºC
  • Good optical transmission
  • Blocks UV
  • Excellent resistance to thermal shock


Typical Uses:

  • Windows for room heaters and stoves
  • Fireplace screens
  • UV blocking shields
  • Cover panels for high powered flood lights
  • Cover panels for IR drying appliances


Abrisa Technologies can provide ROBAX® in thicknesses of 3mm to 5mm and in sizes up to 62” x 33” (1574.8 x 838.2mm)


Find out more about ROBAX® – click here


PYRAN® is a transparent environmentally friendly fire-rate architectural glass-ceramic that is fire-protection rated for up to 90 minutes. It is intended for use in non-impact, safety-related locations.



  • Outstanding optical clarity
  • Mirror smooth finish
  • Produced without any toxic/heavy metals, arsenic or antimony


Typical Uses:

  • Vision panels in fire doors
  • Fire door lights
  • Fire window glazing


Abrisa Technologies can provide PYRAN® in thicknesses of 5mm and in sizes up to 77” x 43” (1955.8 x 1092.2mm)


Find out more about PYRAN® – click here


Abrisa Technologies is a recognized global supplier of high quality, fabricated glass components, optical thin film coatings, and custom glass solutions for a wide variety of industries. From our US based Abrisa Industrial Glass fabrication facility in Santa Paula, CA and our ZC&R Coatings for Optics division in Torrance, CA we serve diverse industries such as microelectronics and displays, semiconductor, military, automotive, aerospace, medical, biomedical and scientific R&D. We provide custom specialty flat glass and coating products for applications such as: flat panel display, touch and gesture recognition; visible to IR imaging and surveillance; entertainment, indoor and outdoor lighting; advanced instrumentation; and photonics.


Need information for Glass Substrates & Fabrication - Contact us Toll Free at: (877) 622-7472 or

Need information for Thin Film Optical Coatings - Contact us Toll Free at: (800) 426-2864 or

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