As a seasoned professional in the HVAC industry, I have witnessed firsthand the importance of properly sealing air ducts. One common question that often arises is whether or not duct seal compound hardens over time. The answer is no, it will not harden or form a skin under normal conditions. This is why it is the preferred choice for sealing air ducts, as it remains supple and flexible for years to come. The RectorSeal Duct Seal compound is a gray, soft, non-toxic, putty-like compound that is specifically designed to adhere to most clean and dry surfaces.
Unlike other sealants, it does not contain asbestos and will not damage plastic materials or corrode metals. It is also safe to use on human skin, making it a versatile and convenient option for sealing air ducts. One of the main differences between duct sealing putty and plumber's putty is the ingredients used to make them and their melting points. While plumber's putty is primarily used to seal leaks in plumbing, duct sealant is specifically designed to repel moisture and seal air leaks. This makes it the ideal choice for sealing air ducts, as it can effectively block out moisture, dust, and air from entering. Another advantage of using duct sealant for air ducts is that it does not require any messy cleanup afterwards.
Most air duct sealants are non-toxic, making them safe to use in poorly ventilated areas or where access to safety equipment may be limited. On the other hand, plumber's putty is designed to repel water and create an airtight seal, but it is not suitable for areas subject to significant water pressure. While plumber's putty may be used to seal faucets during plumbing installations, it is not recommended for use on threaded or threadless water supply pipes. This is where duct sealant shines, as it can be used to protect areas with electrical connections or to ensure that outlets and switches are safe from nearby water sources. It is also effective in blocking noise, making it a versatile and practical choice for sealing air ducts. In addition to its many benefits, duct sealant is also a permanent solution for repairing leaks in air ducts.
It forms a strong bond with the metal surface, effectively sealing any leaks and preventing them from reoccurring. This makes it a cost-effective option in the long run, as it eliminates the need for frequent repairs or replacements. In conclusion, as an expert in the HVAC industry, I highly recommend using duct seal compound for air ducts. Its non-toxic and versatile nature, along with its ability to form a permanent bond with metal surfaces, make it the ideal choice for sealing air leaks. So if you want to ensure the efficiency and longevity of your HVAC system, consider using duct sealant for your air ducts.
