The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China announced results of the state supervision and inspection of 29 types of mechanical seal products in 7 provinces and municipalities directly under the Central Government, including Tianjin, Liaoning, and Zhejiang. The pass rate of product physical sampling was 99.5%. Among them, one kind of product was leak tested due to the breakage of the rubber bellows during the operation test, and the running test could not be continued. Individual products carbon graphite seal ring wear and air tightness test failed.
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