Ball jars are proudly made in the USA. The lids are free of BPA.
We recommend using only Ball® or Kerr® brand lids. BPA-free, these brands offer the safest, most reliable results of any lid on the market. Foods sealed with SureTight lids can be safely stored for up to 18 months.
Use a fresh lid every time to ensure your jars seal properly, safely preserving your food. After the first use, the lid will no longer seal effectively.
Preheating lids is not required. After extensive testing by our Quality Assurance Team, we found that it is no longer necessary to pre-warm lids before use. While it is still safe to simmer your lids before use, you should never boil them.