Effectively seal and lubricate metal piping systems with Weld-On 505 Key Tite Metal Pipe Thread Sealant. Great for gas and plumbing applications, this pipe sealant can be used on all types of metal joints (threaded, flanged, and gasketed). Its special formulation not only seals and lubricates metal pipe joints but also protects them from rusting and seizing. The result is a leak-free, pressure-tight joint that can withstand the demands of various metal piping systems--including those carrying air (compressed or gaseous), alcohols, gases, low pressure steam lines, sugar (liquid), and hot or cold water. And thanks to its low-VOC content of 140 grams per liter, this thread sealant helps promote a better working environment for pipe repairers.