Brock Supply High Temp RTV Silicone Sealant 10.2oz - Engine Gasket Maker & Heat Tab Adhesive

Mechanics and DIY auto enthusiasts, this Brock Supply RTV silicone is one of those shop essentials you'll find yourself reaching for constantly. The 10.2oz cartridge fits standard caulking guns, making application clean and controlled compared to those messy tubes. This isn't your basic hardware store silicone - it's formulated for automotive use with a temperature range from -70°F to +400°F (-57°C to +204°C), so it handles engine bay heat without breaking down. The aluminum color blends well with most engine components too. Where this stuff really shines is gasket making - whether you're replacing valve covers, oil pans, or timing covers, it creates reliable seals that hold up to oil, coolant, and vibration. It's also the preferred sealant for attaching heat tabs to gasoline, marine, and diesel engines when testing for overheating - it ensures accurate heat transfer for proper readings. The curing time is pretty standard - skins over in about 10 minutes, dry to touch in an hour, and fully cures within 24 hours (humidity can speed this up). I've used it on everything from classic car restorations to daily driver repairs, and it consistently delivers strong, flexible seals that don't shrink or crack over time. Beyond engine work, it's great for sealing trim, joints, and other automotive components where you need durability and heat resistance. The quality feels professional-grade - smooth application, good adhesion, and no separation in the cartridge. If you work on cars regularly, having a quality RTV silicone like this in your toolbox is pretty much mandatory for those countless sealing applications that pop up during repairs and maintenance.