600° Silicone Sealant - Red, 10.3 oz Cartridge

Ideal for sealing pellet stove flues and gas appliance vent pipes, this Hi-Temp Red silicone sealant is engineered for high-heat applications. It withstands continuous temperatures up to 550°F and intermittent spikes up to 600°F. Suitable for both indoor and outdoor use, it cures in 24 hours at temperatures of 60°F or higher, forming a durable, flexible, and heat-resistant seal that’s perfect for demanding venting systems.