The Permatex Thread Sealant is the perfect solution for sealing and resisting pressure in air, oil, diesel fuel and hydraulic systems. This tube of sealant remains pliable at higher and lower temperatures, ranging from -65°F to 300°F. It outperforms tapes and pipe dopes, making it the ideal choice for a variety of applications. This sealant is easy to apply and provides a reliable seal that will last. FleetPride is your First Click in Heavy Duty®.