What do the terms “intumescence,” “endothermic,” and “elastomeric” mean?
An “intumescent” product is one that, when exposed to heat, expands to fill a void in the penetration caused by the deformation or combustion of the penetrating item. An “endothermic” product blocks heat by chemical absorption and moisture release. “Elastomeric” products are flexible and prevent passage of heat and gases while permitting movement of the assembly.
