Engineered specifically for use with GMP AirStream cable blowing machines, this pack of five spare tube seal O-rings ensures optimal performance and reliability during cable placement operations. Designed to fit tube outside diameters ranging from 12 to 12.7 mm, these seals provide a secure and effective barrier, enhancing the efficiency of your equipment. With each package offering multiple components, you can easily replace worn or damaged seals, keeping your operations running smoothly. These O-rings are a crucial accessory for anyone involved in cable installation and maintenance, combining durability with precision engineering to meet demanding industry standards.