This genuine Stihl exhaust gasket is designed to seal the connection between the cylinder and muffler on a variety of Stihl handheld power equipment, including hedge trimmers such as the HS 45 and HS 81. Made from heat-resistant gasket material, it helps create a secure seal to reduce exhaust leaks, maintain proper engine performance, and shield surrounding components from excessive heat. A properly functioning exhaust gasket supports reliable starting, smooth idle characteristics, and consistent power output during operation.