Designed for extreme conditions, these 40MPa and 30MPa two stage rings withstand high pressure environments with PTFE ensuring stability and durability in industrial equipment and heavy machinery. The innovative two stage provides sealing, minimizing leakage risks in long running equipment like air compressors and hydraulic systems, extending device life. PTFE natural lubrication, reducing friction without additional lubricants, ideal for frequently operated machinery to minimize downtime and efficiency. Highly resistant to acids and alkalis, these PTFE rings maintain integrity in harsh chemical environments, perfect for chemical plant and lab equipment. Package includes: 5Pcs Air Compressor rings