Secure (7 MIL) PVC Contractor Grade Purple Electrical tape is constructed with 7 MIL thick PVC, backed with a rubber adhesive for a strong hold. You will find this tape is hot and cold weather resistant while still flexible in cold weather. It is flame-retardant and resist UV rays, abrasion and moisture. Secure (7 MIL) PVC Contractor Grade Purple Electrical tape is also UL listed and CSA approved. You will find Secure Purple Electrical tape will provide the performance you need, as well as the quality you would expect, at a price that will satisfy you and your budget.