Sealings are static components preventing the leakage of fluids or gases within vehicle systems. Primarily utilized in engine, transmission, and hydraulic applications, they create a barrier between mating surfaces. Common materials include nitrile rubber, silicone, and fluoroelastomers, selected for chemical and temperature resistance. Designs range from O-rings and lip seals to gaskets and valve stem seals, each optimized for specific pressure and dynamic conditions. Proper sealing prevents component failure, maintains system efficiency, and ensures operational safety.