Since its founding in 1964, Mantaline Corporation has built its identity around engineering-driven manufacturing from its headquarters in Mantua, Ohio. The company develops customized elastomeric sealing systems for customers in transportation, construction, and industrial markets, with operations across North America and Mexico. Its quality and environmental systems are registered to ISO 9001:2015, IATF 16949:2016, and ISO 14001:2015.
IATF 16949:2016
ISO 14001:2015
ISO 9001:2015
REACH Compliance
Compliance program
RoHS Compliance
Compliance program
Conflict Mineral Compliance
Compliance program
IMDS Declarations
Compliance program
PFAS Declarations
Compliance program
California Proposition 65 Declarations
Compliance program
TSCA Declarations
Compliance program
Persistent Organic Pollutants (POPs) Declarations
Compliance program
CONFLICTMINERALS
Quality certification
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
Seal Master CorporationFounded in 1974 by former B.F. Goodrich rubber-industry engineer Edward J. Bittle, Seal Master Corporation in Kent, Ohio, designs and manufactures custom fabric-reinforced inflatable seals and bags for demanding applications. Its fully molded, American-made products are engineered with customers for mission-critical environments, and the company says it has created more than 8,500 custom rubber products over nearly five decades. Every product is inspected at least twice and undergoes mandatory underwater leak testing before shipment.KENT, OH
Flexaseal Engineered Seals and Systems, LLCFrom its Vermont headquarters, Flexaseal Engineered Seals and Systems designs and manufactures mechanical seals and engineered seal support systems for rotating equipment in demanding industrial settings. Beyond its U.S.-based manufacturing, the company supports customers worldwide with seal repair, custom engineering, and predictive maintenance services such as motion amplification and laser alignment. Flexaseal holds ISO 9001:2015 certification and has operated in its local community for more than 30 years.ROCHESTER, NY
Sealing DevicesSealing Devices grew from Terry Galanis Sr.’s $157 home-based venture in Alden, New York, into a third-generation family-owned company serving critical applications. Founded in 1963, the Lancaster-based manufacturer supports customers with custom sealing work and related engineering guidance, while maintaining a 225,000-plus-square-foot manufacturing footprint and serving all 50 states and more than 20 countries. Its quality systems have been certified to ISO 9001:2015 and AS9100D.LANCASTER, NY