Covalence 509W Thread Seal Tape is a multi-purpose non-adhesive thread sealing tape. It is a self-lubricating tape for wrapping threads at pipe connections making them easy to assemble and disassemble. Thread Seal Tape extends fatigue life of sealed connections and eliminates system contamination common with messy liquid and paste sealants. Product can also be used on a number of other maintenance type applications. It is easy to use and has an unlimited shelf-life. Also known as "Thread Sealant Tape" and "Ribbon Dope".