The HOLMER genuine part 1125021721 is a high-quality FKM (Fluoroelastomer) sealing ring, precisely engineered with an inner diameter of 21mm, an outer diameter of 27mm, and a thickness of 3mm. Designed to meet OEM specifications, this sealing ring provides reliable and durable sealing in various HOLMER agricultural machines, preventing leaks and maintaining system integrity. Essential for routine maintenance and repairs, it ensures the operational efficiency and longevity of your HOLMER equipment.