Non-conforming materials is a very common issue that almost all manufacturers deal with on daily bases. it ranges from regular suppliers to product coming out of the line that does not meet specifications. The most recent non-conformity that have dealt with was when parts from a certain supplier started failing incoming inspection due to the presence of moisture. A root cause investigation was initiated to determine the cause of moisture getting into the device, despite all the parts passing all shipping tests earlier. The root cause investigation revealed that the heat sealer that is used by the supplier to seal the device was not covered while not in use, which led to dust to accumulate on the sealing line, thus creating an imperfect seal when use. A corrective and Preventive action was issued to the supplier to correct the failure and to prevent such problem from reoccurring