Christy’s Ultra Seal is an all-purpose thread sealing compound, containing Teflon for easier assembly/disassembly. Ultra Seal is a white, brushable, grit-free, smooth paste. Ultra Seal provides a leak-free seal on most types of metal and plastic threaded applications. It’s non-toxic, non-seizing, and non-hardening. Ultra Seal does not transfer any taste or odor, is non-corrosive and contains an anti-galling compound that allows for easy disassembly after years of service.