corrosiveness

Applicable to acid (except vaporish acid),alkali, ammonia, vapor, oil, organic solvent ,chemistry corrosiveness, filling airtight of rotary pump.

适用酸（除发烟硫酸外），，，气，油品，有机溶剂，化学腐蚀性介质的各种旋转泵，门的填料密封。