AKTISIL PF 216 is an activated SILLITIN Z 86, produced by modifying the surface with tetrasulfane. The by-products split off during the treatment reaction are largely removed during the production process which firmly attaches the silane to the filler surface. This helps minimize undesirable side effects, as they are potentially encountered with insitu mixing (direct addition of silane to the compound).

A special processing technique makes the material hydrophobic.

During vulcanization, the tetrasulfane groups of the AKTISIL PF 216 react in the presence of accelerators and sulfur, forming disulfide and polysulfide bonds with the polymer.