Brass End Cap

Nickel-plated brass blanking plugs (also known as metal sealing plugs or brass protective caps) are metal components specifically designed to seal unused, reserved cable entry ports on electrical equipment. Precision-machined from high-quality brass bar stock, these products feature a nickel-plated surface finish. They achieve a tight, secure fit with the equipment's openings through a combination of threaded locking and the compression of an O-ring seal. When equipment—such as distribution boxes, explosion-proof junction boxes, or control cabinets—is designed with reserved cable entry ports that remain unused in practice, these nickel-plated brass blanking plugs serve as a perfect substitute for standard cable glands. Leveraging the inherent strength of metal, they maintain the enclosure's original IP protection rating and explosion-proof integrity, while simultaneously providing electromagnetic shielding and corrosion resistance. The product is available in four major thread standards—M-type (Metric), PG-type (German), NPT-type (American), and G-type (British)—making it the professional choice for high-end applications in hazardous areas, offshore engineering, and the petrochemical industry.