Since 1921, Cleveland-based AD Piston Ring, LLC has made custom piston rings and seals for industrial equipment, including hydraulic and pneumatic systems. Founded in New Haven and relocated to Cleveland in 1925, the company now builds cast iron rings up to 30 inches alongside bronze and stainless steel designs, with U.S. manufacturing and rush service available for urgent orders. Its Shurseal joint configuration, developed in-house for bidirectional sealing with minimal leakage, is a particular signature.
Sealing Specialists and Service CompanyFounded in 1976 by Tony Urso, Pittsburgh-area Sealing Specialists and Service Company has grown from a distributorship into a 25-employee manufacturing, repair and distribution center for industrial seals. The Glenshaw company produces custom seals and gaskets, distributes sealing products across the United States and Canada, and repairs pumps and hydraulic cylinders in-house. Its ISO 9001:2015 certification and planned 22,000-square-foot expansion reflect a business entering its fifth decade with the same focus on making seal sourcing faster and more practical for customers.GLENSHAW, PA
System SealsFounded in Cleveland in 1995 by engineer Arnold von Engelbrechten, System Seals designs and manufactures custom high-performance sealing systems for equipment where failure is not an option. Its engineers use proprietary modeling tools to tailor seals to exact operating conditions, supporting OEMs and operators in demanding wind-energy, oil-and-gas, and heavy-industrial applications. The company now has more than 160 people across North America and Europe and serves customers in over 40 countries.CLEVELAND, OH
Columbus GasketFounded in 1975 as Columbus Gasket and Supply, Columbus Gasket manufactures custom gaskets, seals and molded parts for industrial and manufacturing customers across the Midwest and North America. Its specialty shop combines more than 80 years of team experience with hand-cut work for unusual parts, while modern cutting and forming equipment supports both small custom jobs and large production runs. Since its 2023 acquisition by Cleveland-area Essential Sealing Products, the company has continued expanding its materials and customization options.COLUMBUS, OH
Eraseal Technologies LLCEraseal Technologies LLC is a Hatfield, Pennsylvania supplier and manufacturer of standard and custom seals, with a particular focus on hydraulic applications. Its sealing systems serve demanding equipment in hydro-electric power, extrusion and forging, and wood manufacturing, including older or worn machinery that requires custom sizing. The company draws on more than 55 years of combined hands-on hydraulic experience and makes seals ranging from very small specialty parts to endless forms up to 100 inches in diameter, with still larger split seals available.339991HATFIELD, PA