Pneumatic seal maintains the proper pressure level in valves and cylinders by limiting the passage of air or gases. It is extremely robust and has flawlessly low friction. When exposed to air, it needs the least amount of lubricant for tight sealing. Pneumatic cylinders have long made use of these products. These have a narrow connection between the sealing lip and body. The lip is wider toward the contact region to provide stability under pressure. Pneumatic seal is used for high-pressure dynamic applications like hydraulic cylinders. These are typically designed for lower operating pressures and are utilised in pneumatic cylinders and valves.