Unfortunately there has been an increase in burst test failures during the recent deliveries. We therefore need to make sure that your quality team understands the requirement, and that you apply the same burst test methods as our costumer.
1. At the end of the 15 psi burst test requirement, it is stated that “No seal shall yield more than 50% of the seal width” – this means at any given point (i.e. if there is a weakness somewhere in the seal and it opens more than 50% only at that point, it is a failure). It is not sufficient to measure pressure loss during a burst test process, as if only a minor area opens more than 50%, but the rest remains intact, it will not be a proper measure method.
2. A visual test is performed on top of the burst test performed by the burst test equipment – please see attached sheet for instructions.
It would be very appreciated, if you in the future could conduct this visual burst test, in addition to the general burst test.
If you have any questions please don’t hesitate to call me.
Unfortunately there has been an increase in burst test failures during the recent deliveries. We therefore need to make sure that your quality team understands the requirement, and that you apply the same burst test methods as our costumer.
1. At the end of the 15 psi burst test requirement, it is stated that “No seal shall yield more than 50% of the seal width” – this means at any given point (i.e. if there is a weakness somewhere in the seal and it opens more than 50% only at that point, it is a failure). It is not sufficient to measure pressure loss during a burst test process, as if only a minor area opens more than 50%, but the rest remains intact, it will not be a proper measure method.
2. A visual test is performed on top of the burst test performed by the burst test equipment – please see attached sheet for instructions.
It would be very appreciated, if you in the future could conduct this visual burst test, in addition to the general burst test.
If you have any questions please don’t hesitate to call me.
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