RTV587 Blue Silicone 80ml/2.7oz

The Loctite RTV587 Blue Silicone 80ml sealant is a professional-grade gasket maker designed for high-performance automotive applications. It is particularly useful for mechanics and automotive enthusiasts who need to create reliable seals on components like valve covers, oil pans, and intake manifolds. This product is engineered to withstand engine heat, oil exposure, and vibration, ensuring superior durability.

This blue silicone formulation cures to form a flexible, oil-resistant elastomer that maintains integrity across temperature cycles from –60°F to 400°F. It bonds directly to metal surfaces—cast iron, aluminum, and steel—without the need for a primer, creating a waterproof barrier that resists engine oil, coolant, and automotive fluids. Once fully cured, typically within 24 hours at room temperature, the sealant provides permanent flexibility to accommodate thermal expansion and vibration-induced movement.

This product is essential for mechanics involved in rebuilding older engines or modifying valve train geometry. It is also ideal for replacing seized bolts on manifold flanges, where traditional gasket materials may fail. The RTV587 sealant is a reliable choice for both restoration work and custom engine builds.