Greene Tweed

Employee Size

1,001-5,000

Organization Type

Privately Held

Headquarters

Kulpsville, PA

Founded

1863

Greene Tweed is a 160-year-old engineering and manufacturing company known for helping critical equipment keep operating in the world’s harshest environments. From its Pennsylvania headquarters, more than 200 engineers working across 15 locations develop customized components and materials for customers whose applications face extreme heat, pressure, chemicals, or wear. Its global manufacturing network includes ISO 9001:2015-certified facilities.

• Industrial Energy Products, IncSince 1993, Industrial Energy Products has manufactured American-made high-temperature materials and custom-fabricated insulation and fire-protection components at its Lancaster County, Pennsylvania facility. Its full-service shop takes projects from design and prototypes through production, with particular expertise in custom high-temperature gaskets and fire-rescue equipment. The company serves demanding applications in fields including power generation, manufacturing, defense, and firefighting.MOUNT JOY, PA
• EGC Enterprises IncSince 1978, EGC Enterprises has built its reputation in Chardon, Ohio, as a flexible-graphite engineering and manufacturing company known for solving difficult sealing problems. Its engineers work directly with customers in fields such as aerospace and power generation, developing graphite-based solutions for demanding temperature and pressure conditions from concept through production.CHARDON, OH
• Davlyn GroupDavlyn Group makes engineered technical textiles and composites that manage extreme heat, protect against cuts, and seal industrial equipment. Its vertically integrated U.S. operations span more than 370,000 square feet, supporting both standard products and custom designs for demanding applications. The group’s businesses trace their roots to 1909, while its manufacturing companies serve customers in more than 50 countries; Davlyn Manufacturing also holds ISO 9001:2015 certification.NORRISTOWN, PA
• Sur-SealFounded in Cincinnati in 1965 as a family-owned business, Sur-Seal manufactures engineered components that solve sealing, insulation, thermal-management and protection challenges. Its custom-converting work ranges from precision gaskets to molded and extruded parts, supported by engineering services and a manufacturing network that now spans the United States, Mexico and China. Sur-Seal’s history includes making gaskets for the Apollo missions, while its combined operations now encompass more than 400,000 square feet and over 500 employees.CINCINNATI, OH