Manufacturing site evaluation: received product found to be conforming to specification.Few weeks ago several filter holders with this failure occurred in france.Two were sent in for investigation and were found to be fully according to the specifications.There are no other complaints like these.In 2010 the sealing lip was changed.Result: improvement of the sealing capacity.No other changes have been carried out regarding this product.There are no hints for material or product deviations.Issue attributed to handling.
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