The GRACO 112933 is an exhaust muffler designed to reduce noise generated by air-operated diaphragm pumps. Its main material is not specified in available sources. It is intended for use with GRACO Husky 307, 515, and 716 model pumps to provide quieter operation in industrial environments. Key Features: Exhaust Muffler GRA-112933 GRACO Husky 307, 515, and 716 diaphragm pumps Easy to install Reduces noise from air-operated diaphragm pumps Reliable performance in high-capacity applications Applications:Used with GRACO Husky 307, 515, and 716 diaphragm pumps in industrial settings to minimize noise during pump operation. Installation Notes: Using genuine GRACO parts ensures optimal performance, compatibility, and longevity of your equipment. Ensure the pump is turned off and depressurized before installation. Align the muffler with the exhaust port and secure it according to the equipment manual. Regularly inspect the muffler for wear or damage as part of routine maintenance.