Crankshaft Seal Rings, found within the Engine Parts > Gaskets & Seals category, are critical components responsible for sealing the space between the crankshaft and the engine block, preventing oil leaks and maintaining proper lubrication. These rings are typically located at the front and rear of the crankshaft, ensuring oil remains within the engine and preventing contamination from external elements. Constructed from materials like nitrile rubber, silicone, or Viton, they offer resistance to high temperatures, engine oil, and pressure. Proper sealing is essential for engine performance and longevity. Examples in this category include seals from Elring, Corteco, and specific MAN parts such as MPN 81473016067, 51055040122, and 51125030109, designed for various passenger car and commercial vehicle applications.