The KNIPEX HZ4934-5/3 Back-up Ring Assortment is designed for enhancing sealing performance in various applications. This assortment includes multiple sizes of back-up rings, crafted from high-quality materials to ensure durability and reliability. Ideal for use in hydraulic and pneumatic systems, these rings help prevent extrusion and improve the longevity of seals. The assortment is compliant with industry standards, making it suitable for professional use in automotive and industrial settings. Each ring is precision-engineered to fit standard sizes, ensuring compatibility with a wide range of systems.