TENMAT FIREFLY 108 is a low density, compressible intumescent material which exerts relatively low pressure and free expansion characteristics. The material can be vacuum formed into a variety of shapes as well as being produced in sheet form.

The low free expansion ensures an extremely solid and stable char structure is produced. It is suited to applications including expansion joint and linear gap seals, cable basket protection, fire stop blocks and other construction joint applications where compressibility is a key requirement.