FP - Seal Defects (Creep)


  • A major defect when the seal width is reduced to less than 3 mm (3/32-inch).
  • A minor defect when the seal width has 3 mm (3/32-inch) of bonded seal present.


Seal creep appears as a partial opening of the inside border of the seal.


  1. The sealing bar settings (temperature, pressure and/or dwell time) were not correct during sealing.
  2. The seal area was contaminated with product, moisture, grease, or other contaminants.