PIPE SEALING PASTE is a Premium, Teflon® enhanced compound which provides superior sealing for most threaded metal or plastic pipe, 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 10,000 psi. Not recommended for potable water systems or for use in oxygen service. MRO Solutions 425 Pipe Sealant Paste contains only ingredients recognized by the FDA as safe for Incidental Food Contact as published in 21 CFR, Parts 170-190. Packaged in easy to use brush top cans.