The Alö 521691 is a genuine OEM O-Ring, precisely engineered with an inner diameter of 17.86 mm and a thickness of 2.62 mm. This critical sealing component is designed for use in various Alö Quicke front loaders, including models such as Q36, Q46, Q56, Q66, Q76, Q86, Q96, Q4M, Q5M, Q6M, Q7M, Q8M, and Q9M. It ensures a reliable, leak-free seal within hydraulic systems, maintaining optimal performance and preventing fluid loss in demanding agricultural applications. Manufactured to Alö's high-quality standards, this O-ring provides durability and long-lasting integrity for your machinery.