If you're dealing with leaky seals in your car, motorcycle, or machinery, this EAI oil seal might solve the problem. It's sized 30mm inner diameter, 40mm outer diameter, and 4mm thick, with a double-lip design and a garter spring for constant sealing pressure. Made from nitrile rubber and carbon steel, it resists temperatures from -40°F to 226°F and handles hydrocarbon fluids like oil and grease. The metal case adds rigidity, and the rubber coating ensures a tight fit. It keeps lubricants in and dirt out, protecting bearings, axles, gearboxes, and more. Installation is straightforward—just press it into place. Always confirm your exact size needs before ordering. Whether you're a mechanic or a DIY enthusiast, this seal offers reliable performance and durability. A small part that can prevent big issues like contamination and fluid loss. Keep your equipment running smoothly with this quality replacement seal.