Purchase in single canister or multiple packs. Airtight applications on valve covers, rubbers corks, carburetors, and more. Leaves behind smooth tacky surface. Prevents damages from typical vehicle emissions.
Must manually apply by brush, which may be frustrating for some users.
For a range of appliances, both indoors and outdoors. Waterproof seal resists damages from moisture and rain. Cures white so that users can enjoy a seamless look once finished. Adherable surfaces include ceramic, glass, and moldings.
Small tube may not be the best option for larger projects.
Powerful formula without being too inflexible or difficult to apply. Can be used on copper to natural rubber surfaces. Resists damages from high eat, gasoline, and oils. Remains flexible after drying.
Not as smooth of an application as some of the other products on this list.
Formulated for higher temperatures. An excellent substitute to cut gaskets. Resists damages produced by heat such as shrinking or cracking. Dries quickly and on the spot. Won't spill over. Included nozzle for tighter finishes.
Can be messy to use, so make sure to clean after each application.
Blocks leaks such as cracks in cylinder heads or blown head gaskets. Made of sodium silicate and antifreeze materials to prevent further cracks. Can replace broken products in cooling systems, transmission areas, and engines.
Not the best choice for beginners or those with less experience.
We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.