产品标题:透气帽橡胶圈-透气帽密封橡胶圈 Breathable cap rubber ring - breathable cap seal rubber ring-Rubber Gasket for air pipe head 规格型号: 透气帽橡胶圈,透气帽密封橡胶圈NO.533HFB-250A NO.533HFB-200A透气帽胶圈,透气帽密封胶圈 空气管头橡胶圈,空气管头密