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ManniGlas is made from non-respirable, electrical grade glass fibers held in place with a binder system to satisfy low smoke and odor requirements and provides a low cost alternative to silicone and ceramic fiber gasketing materials for people in the HVAC field. It excels in applications requiring superior thermal resistance where space is limited.


  • Made from electrical grade glass fibers
  • Operating temperature of 400° F to 1200° F
  • Flame Rating: UL 94V-O


  • High temperature stability
  • High humidity stability
  • Weight reduction
  • Easy to die cut into intricate shapes
  • Flexible to conform to a 90-degree bend

Markets utilizing these materials

  • HVAC
  • Appliance
  • Automotive
  • Hearth Products
  • Lighting
  • Boilers
  • Steam Trace Lines

Interested in ManniGlas?

Call us at 1-800-969-6242 or request a quote today. Our team of experts is available to help answer any questions you have along the way.

Not sure which material you need for your custom rubber product?

View our rubber material selection guide.

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