Keep the dust out with a tight shield to helmet seal. The Impact Shield Foam Kit features an adhesive backing for easy installation and a Nomex outer layer for added heat and flame resistance. When Nomex is exposed to intense heat, its fibers thicken and carbonize, absorbing heat energy in the process. Additionally, Nomex fibers won’t melt, drip, and won't wear away. Nomex delivers high-performing protection when every second counts.