I'm canning a lot of vegetables and fruits. I reuse jars and lids from store-bought products like mustard or mayonnaise. The lids aren't interchangeable. In fact, there's a huge variety in the lids' shape, size, and thickness. It's especially frustrating when those custom lids lose the sealing and grip over time or they rust. Hunting an exact replacement is often impossible, so you can't reuse this specific jar anymore.
If you're pickling things and are storing them long-term, you absolutely should not re-use jars and lids from store-bought products. Canning lids are not re-usable, and you're risking your life by doing so. Use products intended for home canning, and use a new lid every single time!
I'm canning a lot of vegetables and fruits. I reuse jars and lids from store-bought products like mustard or mayonnaise. The lids aren't interchangeable. In fact, there's a huge variety in the lids' shape, size, and thickness. It's especially frustrating when those custom lids lose the sealing and grip over time or they rust. Hunting an exact replacement is often impossible, so you can't reuse this specific jar anymore.