The Iseki 142143303100 is a genuine OEM simmer ring, also known as an oil seal, designed for Iseki agricultural and industrial machinery. This specific seal features precise dimensions of 30mm inner diameter, 37mm outer diameter, and 4mm thickness, ensuring a tight and effective seal to prevent lubricant leakage and protect components from contaminants. Manufactured to Iseki's original specifications, it guarantees optimal performance and durability in demanding operating conditions.