Temperature Hand sealers come in all shapes and sizes, with heat ranges that range from around 300 degrees Fahrenheit to over 1,000 degrees Fahrenheit. What heat temperature is used in a hand sealer depends on the specific model, but generally speaking, the higher the heat range, the greater the heat intensity. In order to maintain consistent quality and avoid damaging your product, it’s important to use the correct heat temperature for your hand sealer. When using a hand sealer at a lower heat range (300 degrees to 350 degrees Fahrenheit), you’ll need to use more intense heat in order to achieve a strong seal. This is because the hand sealer won’t be able to produce as much heat as a hand sealer that operates at a higher heat range (350 degrees to 500 degrees Fahrenheit). Additionally, you’ll need to use more intense heat if you’re using a hand sealer with a wide temperature range (500 degrees Fahrenheit or greater). If you’re using a hand sealer with a narrow temperature range (300 degrees Fahrenheit or less), you’ll need less intense heat in order to achieve a strong seal. It’s important to remember that using too much intense heat can damage your product.