Rubber sealing plugs are designed to effectively plug copper pipes and components used in the HVAC industry. The purpose of these plugs is to securely seal the ends of pipes and components to prevent leaks or the ingress of any unwanted substances. The standard color of these plugs is black for a stylish and unobtrusive look. However, for individuals or businesses looking for a more personal touch, custom colors are readily available. This allows customers to match the plug to their existing color scheme, brand or personal preference. This customization not only provides more aesthetically pleasing results, but also integrates seamlessly with the overall design of the HVAC system. Whether in an industrial or residential environment, these rubber sealing plugs provide a reliable solution for maintaining the integrity and functionality of HVAC systems.