Coating Services

HV Insulator Coating

ESM, Inc., recommends the application of an insulator coating product to areas where high contamination and/or corrosion will occur to prevent leakage current and flashover to all porcelain insulators.

ESM uses Si-COAT 570 High Voltage Coating (HVIC) is a room temperature vulcanizing (RTV) silicone product. A single component, RTV, moisture cure, high-build polysiloxane coating providing excellent long-term hydrophobicity, hydrophobicity recovery, electrical characteristics and UV tolerance leading to suppression of leakage current, reduction of pollution related flashover risk and long service life.


The following coating products are recommended:

– HV Silicone Grease Compound
– HV RTV Products
– HV CSL Product
– HV Sylgard (Dow Corning)