The Duct Seal 18mm by GMP Tools is a crucial component for ensuring the effective management of cable placing and safety in various applications. Designed specifically for use with cable blowing operations, this duct seal enhances the efficiency of your system by providing a reliable means of sealing and protecting installation sites. With a part number of 89076, it is engineered to facilitate the optimal performance of cable blower accessories, making it an essential addition for professionals in the field. This component underscores GMP Tools' commitment to delivering high-quality solutions tailored for the demands of modern electrical installations.