The Niemeyer 550134 is an original equipment manufacturer (OEM) O-ring, also known as a seal ring, designed for critical sealing applications in Niemeyer HR 300 and HR 400 series agricultural machinery. With an inner diameter of 95 mm and a cross-section of 5 mm, this genuine Niemeyer part ensures a reliable, leak-free seal, maintaining optimal performance and preventing fluid loss in demanding operational conditions.