This project investigated whether inflation holes affect the sealing performance of bulb seals, used in aircraft engine bleed valves. Bulb seals are cylindrical rubber gaskets with a hollow interior. It is believed that sealing performance is improved by putting small holes on the high-pressure side with the intent of the seals inflating once pressurized. This would improve the ability of the compliant rubber to fill imperfections in a sealing surface. A pressure vessel was designed and manufactured that could hold over 60 PSI and include an interchangeable bulb seal region. Tests were conducted to see the steady state pressure that bulb seals, both with and without holes, can hold while receiving a continuous supply of air from a compressor. Numerous trials with various bulb seals were conducted to compare bulb seals with varying inflation hole count. Based off the data, ME31 concluded that the inflations holes do have a positive effect on bulb seal performance. The seals with no holes consistently held less pressure compared to seals with holes. This shows that the holes do inflate the seal, leading to better sealing capabilities and less leakage across the seal.