YCC型号密封圈气动密封丁腈橡胶材质密封YCC型号尺寸25*17*5232*24*5.2 40*30*6.550*40*6.5 63*53*6.570*60*6.5 75*65*6.5 80*70*6.590*80*6.5100*85*9.5100*90*7