In case of silica-filled NBR vulcanizates, the use of ENR as a compatibilizer improved tensile strength, tear strength and abrasion loss [20], as well as lowered the loss tangent [21], as the ENR acts as a coupling agent because it can self-crosslink with NBR and also link with silica at the vulcanization temperature [20] and [21]. Furthermore, ENR was used as a compatibilizer in organoclay-filled NR composites wherein cure characteristics, tensile and dynamic mechanical properties were improved [22] and [23].