Mechanism of swelling oil-leakage of transformer s seal rings made by butadieneacrylonitrile rubber and polytetrafluoroethylene is presented in this paper.

• 首次对以丁腈橡胶和聚四氟乙烯为材料的变压器密封圈的溶胀机理进行了研究并获得重要成果。