Methyl isocyanate (MIC) is a highly toxic chemical that is colorless and has an irritating, pungent odor. It is also known as isocyanatomethane, methylcarbamoyl chloride, and monomethyl isocyanate. It is used in the manufacture of polyurethane foam, adhesives, sealants, pesticides, and herbicides.
When rubber is exposed to Methyl Isocyanate, it can cause hardening, cracking, and embrittlement of the rubber due to the chemical's ability to degrade the rubber's polymer chains. Additionally, due to the chemical's high reactivity, exposure to Methyl Isocyanate can cause the rubber to become brittle and lose its elasticity, which can lead to premature failure. In extreme cases, prolonged exposure to Methyl Isocyanate can cause the rubber material to completely break down.
Fluorosilicone o-rings are a hybrid of silicone and FKM resulting in great jet fuel resistance with high and low temperature performance. Also widely used in semiconductor Ashing equipment with strong resistance to oxygen plasma, FVMQ fluorosilicone o-rings also feature excellent flexibility, compression resistance, aging and sunlight resistance, and overall wide range of basic chemical resistance.
View some of our other material compatibility ratings with METHYL ISOCYANATE. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide