Does tyflon tape have a shelf life?

Teflon tape, also known as PTFE tape, does not have a specific shelf life, as it is chemically stable and resistant to degradation over time. However, it is best to store it in a cool, dry place away from direct sunlight to maintain its effectiveness. If the tape appears damaged, discolored, or brittle, it's advisable to replace it. Generally, as long as it is stored properly, Teflon tape can be used indefinitely.