The BISCO RS-700 Series of closed cell silicone sponges are designed to perform in conditions that require a gasket with extra strength and durability. RS-700 products provide high tensile strength and elongation, low compression set and a smooth surface to laminate and bond adhesives. These materials are rugged enough to outperform competitors in harsh environments that require silicone material. RS-700 products are available in continuous roll form in three firmness grades. These products are currently available for sale only in North America, Central America, South America and Asia.


  • Available Thicknesses of .094-.5 inches
  • Rated for constant use up to 205°C (401°F) and intermittent use up to 260°C (500°F)
  • Rated for low temperature embrittlement point of -55°C (-67°F)
  • Seals against water at conditions as low as 15% compression
  • Meets the strictest UL gasket certifications


  • Built to withstand the harshest applications and most extreme conditions
  • Stretches up to 175% before material failure
  • Offers unparalleled water sealing capabilities over long periods of time
  • Continuous roll fabrication means improved manufacturing efficiency
  • Combines high tensile strength with abrasion resistance


Description Language File Type File Size
Transition From 7000 Series to RS700 Series Sponge English
Data Sheet
BISCO RS-720 Data Sheet English
BISCO RS-750 Data Sheet English
BISCO RS-770 Data Sheet English
Sell Sheet
BISCO RS-700 Silicone Sponge Series Sell Sheet English
Technical Information
BISCO Silicone Solvent Resistance English


Explore our calculators, conversion tools, technical papers and more.

  • BISCO® Product Properties Guide

    Filter BISCO® product information by various criteria, including property groups, product category or units, to find the best material for the application.

Need a Sample?

Samples can be requested through our online request system.


Elastomeric Material Solutions

Find local representatives for personalized support.