Senior Aerospace Bird Bellows (also known as Senior UK, SABB) is a designer and manufacturer of precision-engineered metallic bellows. It produces gimbal, vibreaker, ball, and special joints, precision and valve bellows, engine nacelle ducts, and bellows assemblies. The company caters to the aerospace, oil and gas, chemical, petrochemical, power generation, marine, offshore, waste management, and renewable energy industries.