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和记FTS公司新近研制的空调密封环为绿色环保产品。这种双平面密封环可减少致冷剂排放量达80％，且在须重新填充致冷剂之前可重复使用二次。标准的汽车空调装置需要8~12个密封环，而使用新密封环只需一个O形环就可。据统计每个致冷剂接合处的平均渗漏率为9g，而相比之下，双面
Hutchison FTS newly developed air-conditioning seal ring for the green products. This double flat seal reduces refrigerant emissions by up to 80% and can be reused twice before refilling the refrigerant. Standard car air conditioners require 8 to 12 seal rings, while the new seal ring requires only one O-ring. The average leakage rate at each refrigerant junction is estimated to be 9 g, in contrast to both sides