Flexible Solutions

Material Spotlight: BISCO HT-800 Medium Silicone Foam

Posted by Katie Sullivan

May 27, 2020 12:02 PM

Per the Rogers Corporation Website, Rogers “BISCO HT-800 Medium Cellular Silicone offers the lightness of foam with the enhanced sealing capabilities of sponge rubber.” In this post, we are going to dive a little deeper into this excellent material.


Silicone foam materials, in general, are excellent materials for many reasons. Silicone elastomers will function within the largest temperature range of any elastomer. Commonly, silicones are thermally stable from -100°F to 500°F. They are highly resistant to UV. Silicone is odorless, stain-resistant, and hypoallergenic. Lastly, in terms of gaskets, compression set may be the most common cause of failure in a gasket. A silicone material, especially BISCO HT-800, will outlast all other material choices when it comes to C-set. (Read our blog post about Compression Set here.)

BISCO® HT-800 is an excellent material choice for gaskets that are intended for sealing and protecting outdoor enclosures that house sensitive electronic elements, including communications equipment, electronic devices, and lighting enclosures. This material is uniquely formulated by Rogers Corporation with a compact cell structure that provides enhanced sealing from moisture, fine dust particles, and fire. It also offers vibration isolation and shock absorption.

BISCO HT-800 Features and Benefits

  • Temperature range: -67°F to 392°F
  • Available in thicknesses from 0.031 to 0.500 in.
  • Typical density of 22 PCF
  • CFD range of 6-14 PSI
  • Rated to the most stringent flame standards.
  • FDA compliant

BISCO HT-800 Data Sheet




Marian has been converting Rogers materials since the 1970s. We are a long-standing Rogers Preferred Converter with access to many of their fine materials. We have die-cut thousands of custom gaskets from BISCO HT-800 for our customers. Read the success story below, where Marian recommends HT-800 for a sealing gasket in an outdoor LED lighting enclosure.




Full Case Study


Don’t have time to read the entire thing? Check out a 1-Page Snap Shot of this Story here:

Case Study: 1 Page Snapshot


Additional Resources Related to Silicone Foam

eBook - Pros and Cons of Designing with Silicone Rubber

View Other BISCO Silicone Materials



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Topics: Foams, LED Lighting, BISCO Silicone, Silicone