Random inspection of sealing rings, which sealing companies can't hold?

Recently, Anhui Quality Supervision Bureau announced the results of provincial supervision and spot checks on the quality of rubber seals sealing products in the second quarter. Two types of sealing rings produced by two enterprises in Ningguo City were criticized by the province for their easy deformation. This time, a total of 20 groups of samples produced by 14 enterprises were randomly checked, and 10 indicators such as tensile strength were tested. After the inspection, 18 groups passed the inspection, and the sampling pass rate was 90%. Ningguo Chengguan and Plastic Products Factory produced in May this year“100mm×3.1mm (outer diameter×section)”O-shaped rubber sealing ring, produced by Ningguo Kaiyuan and Plastic Products Factory in May this year“20.4mm×2.4mm (outer diameter×section)”The O-shaped rubber seals sealing ring was exposed due to unqualified three indicators, such as compression set, hot air aging and liquid resistance. Expert analysis pointed out that the compression permanent deformation of the sealing ring and the aging performance of hot air are unqualified, and it will deform when used in a high temperature environment, which will affect the performance; the liquid resistance performance is not up to standard, and dimensional changes will occur during use, resulting in leakage. Affect normal use. Lack of strict quality management in production enterprises, poor quality of raw materials, lack of inspection capabilities, and poor professional operation level of operators may be the main reasons for unqualified products. Company website: https://www.orksealing.com/
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