Ultra Blue

Permatex 81724 (Ultra Blue RTV Silicone Gasket Maker) is a premium, OEM-specified sealant designed for high-torque and high-vibration applications. Temperature Range: -65° F to 500° F (-54° C to 260° C) intermittently. Formulation: Sensor-safe (won't damage oxygen sensors or electronic components), non-corrosive, and low odor. Durability: 3x more oil-resistant than conventional silicones and 8x more flexible than traditional cork or composite gaskets.