LOCTITE 55 are thread sealing cords that are designed to seal off metal and plastic pipes and fittings. Features and Benefits: It needs no cure time and results in an immediate, full pressure seal The product is quick and easy to apply and allows for reliable readjustments Typical Applications: Thread sealing Gas fitting Food equipment Notes: The product has approval for gas and potable water and is certified to NSF/ANSI, Standard 61