When to Replace the Rubber Gaskets on my Grolsch-Style Swing-Cap Bottles

The rubber gasket seals will last for many uses before wearing out. They should be replaced if:

  • There are visible cracks
  • There is mold growth at any time
  • The gasket has become thin
  • The gasket has failed to seal on previous use
  • If you receive Swing top bottles from someone else and are unsure of the gasket age

When cleaning and sanitizing your EZ Cap bottles for reuse, remove the swing top cage from the bottle and remove the gasket from the top. Clean and sanitize them separately, this will ensure that there is no hidden grime between the top and gasket. Reassemble the bottle and proceed with bottling.