Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, stationary, internal combustion engines
Insulating fittings for electrical machines, appliances or equipment, being fittings wholly of insulating material apart from any minor components of metal (for example, threaded sockets) incorporated during molding solely for the purposes of assembly, other than insulators of heading 8546; electrical conduit tubing and joints therefor, of base metal lined with insulating material: > Insulating fittings of ceramics: > Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, stationary, internal combustion engines
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 8547.10.40.00
NGK CER-GY12 Ceramic Spark Plug Insulator
High-alumina ceramic insulator designed specifically for spark plugs in natural gas-fueled stationary internal combustion engines, such as gas generators and compressors. It provides electrical insulation between the center electrode and the metal shell while withstanding high temperatures and corrosive combustion gases typical of natural gas operation. Classifies under HTS 8547.10.40.00 due to its ceramic composition and dedicated use in production of spark plugs for stationary NG engines.
Champion RC12NGY Industrial Ceramic Insulator
Champion's RC12NGY series ceramic insulator for spark plugs in stationary natural gas engines used in power generation and oilfield equipment. Engineered with 95% alumina content for superior dielectric strength and thermal shock resistance in lean-burn NG combustion environments. Meets HTS 8547.10.40.00 as a ceramic insulating fitting expressly for spark plug manufacturing in specified engines.
Bosch FR8NGY Ceramic Spark Insulator Core
Bosch FR8NGY high-performance ceramic core insulator for spark plugs in natural gas reciprocating engines at power plants. Features thin-wall design with threaded metal socket for assembly, offering extended service life in high-vibration stationary applications. Qualifies for 8547.10.40.00 as ceramic insulating fitting for NG stationary engine spark plug production.
Denso XNG27 Industrial Ceramic Insulator
Denso XNG27 series ceramic insulators optimized for spark plugs in large-bore natural gas engines used in pipeline compressor stations. Provides 30kV dielectric strength with corrosion-resistant glaze for harsh NG fuel environments. Specifically designed for HTS 8547.10.40.00 classification in stationary internal combustion engine spark plug production.
Beru GN12 Ceramic Insulating Fitting
Beru GN12 precision ceramic insulator for spark plugs in cogeneration natural gas engines. Multi-layer ceramic construction with integrated metal thread insert for automated spark plug assembly lines. Falls under 8547.10.40.00 for its specific application in stationary NG internal combustion engine spark plugs.
Motorcraft SP-527NG Ceramic Core
Motorcraft SP-527NG ceramic core for spark plugs in natural gas standby generators and industrial engines. High-purity porcelain formulation resists carbon tracking in rich NG mixtures. Designated HTS 8547.10.40.00 for ceramic insulators in stationary NG engine spark plug production.
Autolite NGK4123 Ceramic Spark Insulator
Autolite NGK4123 heavy-duty ceramic insulator for extended-reach spark plugs in natural gas-fueled drilling rig engines. Features double-fired glaze for superior gas seal integrity. Classifies precisely under HTS 8547.10.40.00 for stationary internal combustion NG spark plug production.