Permatex Aviation Form-A-Gasket No. 3 Sealant, 4 oz. 

‎For close tolerance flanges, TYPICAL APPLICATIONS: Solid gasket dressing, Close fitting machined surfaces, Threaded connections, Aviation engines,, Products shall be ideally stored in a cool, dry location in unopened containers at a temperature between 8º to 28ºC (46º to 82ºF) unless otherwise labeled, Slow drying, Flexible setting, Withstands pressures to 5000 psi, For Aviation Engines, For Marine Engines