Insulator
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Porcelain Plant
Polymer Plant

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Porcelain Insulators
Polymer Insulators

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NGK-Locke, Inc.
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NGK-Locke, Inc.

NGK-Locke, Inc., is the exclusive sales company for various types of high-voltage insulators in the United States. We are one of the few companies who can offer both porcelain and polymer products. All of the products that we offer to our customers are produced by NGK’s global production network of ISO 9001-certified factories, including U.S., Indonesia, China and Japan.


Porcelain Insulator
Polymer Insulator

Specific information on our product lines:
• Station Post Insulators
• Suspension Insulators

Dependable quality and world scale supplier of silicone polymer insulators.
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Current News

Technical Information
• Semiconducting Glazed Station Post Insulators: Why the Conductivity Tolerance Does Matter
• NGK 115 kV & 138 kV Corona Ring Statement


Locke Quality Policy: Continual improvement in product quality, delivery and service to increase customer satisfaction.