Опорное кольцо, наружный диаметр 42,2 мм Caterpillar 521-1245

The backup ring for a control valve cartridge is a secondary sealing element positioned behind the primary seal within the cartridge. It serves to provide additional support to the primary seal, enhancing its effectiveness and extending its lifespan. This back-up ring prevents extrusion and wear, ensuring a reliable and long-lasting seal in control valve applications. Attributes:• Durable material to resist extrusion and wear.• Improves the overall sealing performance. • Ensures longevity and reliability in valve applications.Applications:The Back-Up Ring ensures a secure seal in the control valve cartridge of equipment, preventing hydraulic fluid leaks and maintaining accurate control in hydraulic systems.