Question: are kerr and ball jar lids interchangeable?
Answer: Bands, caps and lids are interchangeable with Ball or Kerr jar. Please note: Due to high demand there is a limit of 4 on the Ball Regular Mouth Lids and Bands and a limit of 5 on the Ball Regular Mouth Lids. Regular Mouth Lids for preserving fit all regular mouth glass preserving jars. ... Lids are for one-time use only.