VIPER Nylog White Gasket & Thread Sealant is a non-hardening, non-drying sealant designed to prevent high-pressure leaks on threaded connections, gaskets, PEX, and O-rings. Ideal for sealing air, gas, water, and glycol systems, it performs reliably in temperatures from 50°F to 500°F. Nylog White is NSF registered for use in food-safe environments and is both non-corrosive and non-toxic—making it a trusted choice for plumbing, HVAC, and industrial applications.