What is the main material of insulating glass warm edge gasket?

There are many kinds of materials for insulating glass warm edge gasket. For example, super spacer is made of polyester elastic microporous structure material, stainless steel U-shaped spacer is made of stainless steel, Tylenol composite spacer is made of polypropylene and stainless steel, truss spacer is made of butyl rubber, molecular sieve, polymer insulation strip and other materials, and spacer is made of glass fiber reinforced acrylonitrile and styrene polymer composite materials. These are warm edge gaskets. I hope they will help you.