(b)(4).One (1) unit of 403128 "adaptor,028 neb,intl" was received for analysis.A visual exam was performed and no defects were observed.The sample was tested on oxygen entrainment test and during the setup it was observed that the assembly of the nut adaptor component and the upper body component was unstable.Even with that condition, the sample was able to be tested on oxygen entrainment testing but the testing failed due to the condition.After the testing finished, the adaptor was carefully disassembled from the component upper body and it was visually inspected.During the visual inspection it was found wear on its internal tabs.Based on the additional inspection on the adaptor of the sample received, the complaint is confirmed.Although the condition observed on the sample provided, there is not sufficient evidence to assure that this issue was originated during the manufacturing assembly or molding process.The wear on the internal tabs is most likely be caused by the end user during the connection of the adaptor into the flowmeter that causes an unstable connection issue.
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