As she backed away carefully, the rubberseal of the refrigerator door caught the lip of the glass pitcher, which caused the slippery handle to slip from her hand.
她小心翼翼地往后挪，冰箱门上的橡胶密封圈碰到了玻璃水罐的边缘处。
2
The reason of the seal's failure was analyzed. A new mechanical seal was developed which has an edge-seal end face, and the rubberlipseal was replaced by the mechanical seal.