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You can heat seal many types of plastic, but not all plastics are heat sealable. For the best results, use polypropylene or polyethylene. Be aware that some low-quality sealers may be unable to maintain the high enough temperature required to form an adequate seal. If you’re looking for a reliable heat sealer machine, which will be able to seal almost any kind of plastic you decide to throw at it, don’t hesitate to get in touch with Valdamark today.