Muli-Purpose Silicone Sealant BOSS 323 Hi-Temp Blue Gasket Maker is a one-part, nonslumping paste that cures to a tough, rubbery solid at room temperature on exposure to vapor in the air. This silicone was formulated to perform at temperatures ranging from -85°F to 400°F (-65°C to 204°C). BOSS 323 is non-corrosive and oxygen-sensor safe.
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