PRC^® and Pro-Seal™ sealants seal the structures of many of the world’s aircraft. Our comprehensive range of sealants for aircraft structures includes products for fuel tanks, protecting aircraft mating surfaces and sealing aircraft windshields.  For more than 50 years, PPG Aerospace – PRC-DeSoto has been a leader in the development of products fundamental to aerospace manufacturing, maintenance, and repair. That leadership is firmly established in the highly specialized field of aerospace sealants.