Dome Valve Sealing Rings

These objects are dome valve sealing rings. Specifically, they appear to be inflatable industrial seals used in pneumatic conveying systems to control the flow of materials like ash, cement, or abrasive bulk solids. [1, 2, 3, 4]Material: The brown color is typical for FKM (Viton) or specialized silicone. These materials are chosen for their high-temperature resistance and durability against chemicals and oils. [1, 2, 3, 4] Function: They are inflatable seals. In operation, the seal is relaxed to allow the valve dome to move; once the dome is in place, the seal inflates with air pressure to create a pressure-tight, airtight barrier. [1, 2] Applications: Commonly used in heavy industries such as mining, power generation, and chemical processing.