Ensure your semi truck is Ready for the Road Ahead™ with ultra-secure threaded connections, with the Permatex Thread Sealant. With an advanced blend that locks and seals threads upon contact, this replacement blend works to prevent pipes, hoses, or other similar pieces from leaking. Fashioned with a wide operating temperature range of -65 °F to 300 °F. FleetPride is your First Click in Heavy Duty®.