Founded in Cleveland by William Day in 1919, Day Piston Company manufactures pistons for the automotive and air-compressor markets from its Cleveland, Ohio factory. The company remained in the Day family through three generations before transitioning to private ownership in 2022, while a fourth-generation family member, Clyde “Skip” Jones, contributed more than 40 years to operations. Day Piston serves both OEM and aftermarket customers and is IATF 16949:2016 certified.
IATF 16949:2016
AD Piston Ring, LLCSince 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.CLEVELAND, OH
Advanced SleevePrivately owned and operated since 1992, Advanced Sleeve is an Ashtabula, Ohio manufacturer whose racing heritage shapes its work with engine builders. The company produces American-made cylinder sleeves for restoration, repair and competition applications, offering both stocked replacements and custom-built solutions.ASHTABULA, OH
Triangle Machine ProductsFamily-owned and operated for four generations, Triangle Machine Products has remained in business since 1957, building its reputation on integrity, common sense, and hard work. From its 47,000-square-foot Cleveland-area facility, the company makes precision CNC-turned components for OEMs and other manufacturers, supporting both prototype work and high-volume production. Triangle employs 40 people and holds ISO 9001:2015 and IATF 16949:2016 certifications.CLEVELAND, OH
Standby Screw Machine Products CoFounded in Cleveland in 1939, Standby Screw Machine Products makes custom precision-machined parts for customers ranging from automotive manufacturers to equipment makers. Still privately owned and operated by the Marcell family, the company has grown from two screw machines into a 200,000-square-foot, three-facility operation with 300 employees worldwide. Its Berea, Ohio plant and overseas facilities are ISO 9001:2015 registered, supporting both prototype work and high-volume production.BEREA, OH