The 900-VK413496-1 BACK-UP RING FOR AN A90 PISTON PUMP, manufactured by YUKEN, is a reliable and durable component designed to enhance the performance of hydraulic systems. With its precise design and high-quality materials, this back-up ring provides a secure seal for pistons. Easy to install and compatible with various applications, it ensures leak-free operation in industrial settings. Ideal for applications requiring reliable sealing, this back-up ring guarantees efficient and leak-free performance.