Founded in Victor, New York, in 1893 by Fred M. Locke, Victor Insulators manufactures high-voltage insulators for North American electric utilities and OEM customers. The employee-owned company remains the direct successor to Locke’s original wet-process porcelain operation, now producing custom and standard designs in a 320,000-square-foot plant. Victor’s products span distribution, substation, and transmission applications, with an ISO 9001:2015-certified quality system.
ISO 9001:2015
NGK-Locke, IncFrom its Virginia Beach facility, NGK-Locke manufactures high-voltage polymer insulators and supplies porcelain insulators for electrical transmission, substations, and distribution systems across North America. The company says its long-standing operation has produced millions of insulators, combining established porcelain designs with newer polymer solutions for critical grid infrastructure. NGK-Locke is a group company of NGK Insulators, Ltd., with active ISO 9001, ISO 14001, and ISO 45001 certifications.BALTIMORE, MD
LAPP InsulatorsLAPP Insulators manufactures high-voltage porcelain insulators for power and utility applications, with the company’s American history dating to 1916. Its LeRoy, New York facility developed the semiconductive glaze technology used in its RG® insulators, which the company says have served customers facing contamination-related issues for more than 50 years. LAPP also provides custom engineering for its insulator designs and assemblies.LEROY, NY
PPC InsulatorsWith more than 130 years of experience in electrical porcelain, PPC Insulators is a specialist manufacturer serving the high-voltage power industry. Its in-house isostatic production technology supports demanding insulation applications, while its RTV coating service adds hydrophobic protection for equipment operating in polluted environments.CAREY, OH
Custom Materials, IncSince opening its doors in 1964, family-owned Custom Materials, Inc. has fabricated electrical insulation and components for power-generation, distribution and controls equipment. The Chagrin Falls manufacturer combines in-house engineering with a broad fabrication operation, with particular depth in insulating components for motors, generators and transformers. Its history includes developing transformer spacer sticks and becoming the only independent North American supplier of paper spacer sticks for distribution transformers, while its ISO 9001-registered quality system supports work in demanding industries.CHAGRIN FALLS, OH