What’s the best way to seal Mylar bags without a vacuum?

Method 1: Heat Sealer

For a more reliable seal, consider investing in a heat sealer specifically designed for Mylar bags. These devices apply heat to the sealant strip on the bag, creating a tight, airtight seal. They are relatively inexpensive and can be found online or at most hardware stores.

Method 2: Hair Dryer and Plastic Wrap

If you don’t have access to a heat sealer, you can still create a tight seal using a hair dryer and a piece of plastic wrap. Begin by inserting the contents of the Mylar bag, then use a hair dryer to warm the sealant strip. Once warm, place a small piece of plastic wrap over the sealant strip and use the hair dryer to melt the plastic, creating a tight seal. This method may not be as reliable as a heat sealer, but it can still be effective if done correctly. For best results, use a temperature-controlled hair dryer set between 350-400°F (175-200°C) and apply gentle heat to avoid melting the plastic wrap or the Mylar bag.