Aeroflow’s thread sealing paste contains PTFE to assist in sealing and avoid binding of threads. Recommended for use with all threaded fasteners and adapters in aluminium, steel, stainless steel and plastic. Aero Seal is an Anaerobic paste that remains liquefied until installation to provide a positive seal and can used in temperature ranges from -58° to 400°F / -50° to 204°C.