Solution 425 - Pipe Sealing Paste is a Premium, Teflon® enhanced compound which provides superior sealing for most threaded metal or plastic pipes. Solution 425 will prevent leaks and seal most common fluids and gases, including fuels, oils, water, refrigerants, steam, and inert gases. Non-hardening formula will not crack, shred, or contaminate most systems. Eases assembly and disassembly of metal and plastic fittings. Seals to bursting pressure of pipe and is rated to 10,000psi Not recommended for potable water systems or for use in oxygen service. Product safe for incidental food contact. Packaged in easy to use brush top cans.