To obtain a hot oil resistant, high elasticity, high strength, rubber-like and easy in processing materials for oil-sealing, NBR/PFPA thermoplastic elastomer was prepared by dynamic vulcanization. The mechanical properties were measured. Phase state was analyzed. The results show that in the range of blend ratio, the TPE′s island-like phase structure is kept, with the cross-linked NBR as disperse phase. The particle size of disperse phase changes with blend ratio. The mechanical properties are relational ...