The AUTOMANN A/C O-ring set for GM vehicles includes 10 pieces in green, crafted from materials that provide maximum resistance to leakage and other damages. These O-rings are specifically designed to withstand refrigerants, ensuring optimal performance across various conditions. Their durable construction allows them to endure temperature fluctuations and pressure changes effectively. The tight seals these O-rings create contribute to consistent cooling system performance and reliability. Additionally, their flexibility and snug fit help prevent any unnecessary air conditioning issues, making them an essential component for maintenance and repair tasks.