We have sold tens of thousands of these versatile sealing units to the full satisfaction of our customers. If you have any questions regarding the compatibility of this sealer with your product, bag material, or application, please contact us for assistance. We offer complimentary testing services to make sure that all variables (product, packaging, sealer, and application requirements) are compatible. This is particularly critical when using very heavy multi-laminated bags as bag sealing characteristics may change for each bag type. If you have not yet sealed your bags with a sealer of this type, or need sales/technical assistance, we invite you to contact us or send us a sample of your bags for free testing services.