The total amount of solvent extracts by SFE was determined in 7 vulcanized rubbers with different polarity. For comparison the rubber materials were extracted in accordance with DIN ISO 1407 (conventional method). The extracts were specially prepared and then the amount of antioxidants was analyzed offline by HPLC (High Performance Liquid Chromatography) under defined conditions. The results of SFE and conventional solvent extraction (Soxhlet extraction) are comparable, but the SFE offers more advantages.