Marketing Video Intern Summer 2026

Sealing Devices Inc. is a manufacturer and fabricator of gaskets, o-rings, seals, adhesives and sealants, vents, and a manufacturer of injection, compression, and transfer molded rubber parts. We are expert sponge fabricators with full bun-splitting and welding capabilities.Sealing Devices offers customers expert Application Engineering assistance and recommends innovative programs to aid in cost-downs and project evaluations.Sealing Devices has been in business under private family ownership since 1963, and employs over 230 people in our Lancaster, NY, headquarters. We have over 200 pieces of state-of-the-art manufacturing equipment and specialize in quick turn jobs in prototype through production quantities.We provide products for general industrial sealing, EMI (electro-magnetic interference) shielding, pressure venting, and adhesives recommendations, and maintain authorized line authority for Parker Engineered Materials (EMG) group, including the many divisions under that umbrella, Gore, 3M, Rogers Corporation, Loctite and the largest companies in the sealing industry.Sealing Devices is one of the largest privately-owned sealing experts in North America, and counts the largest OEM's in industrial, transportation, mil/aerospace, electronics, and other industries as long-time satisfied customers.Sealing Devices management systems are certified to the AS9100D and ISO9001:2015, and is ITAR registered with the US Department of State. We are a veteran-owned, small business company incorporating third-generation family ownership. Find your position with Sealing Devices - https://www.sealingdevices.com/careers