Greene Tweed designs and manufactures engineered seals, thermoplastics, and composites for high-stakes industries such as aerospace, semiconductor, and energy. Its products withstand extreme temperatures, pressures, and corrosive chemicals to enable critical applications like commercial flight and sustainable energy. The company stands out through a long history of evolving capabilities, in-house manufacturing, custom material solutions, and cleanroom expertise—applying seal technology to demanding programs (for example GT rings used in the Polaris missile program). Its goal is to be a trusted private partner that delivers reliable, customized components for the world’s most challenging environments.
Company Size
1,001-5,000
Company Stage
N/A
Total Funding
N/A
Headquarters
Towamencin Township, Pennsylvania
Founded
1863
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