Revotec Duct Hose Joining Collars - 90mm ID x 50mm Long

A simple and highly effective way to neatly seal ducts and intake hoses. Each collar has an adhesive inner edge which bonds as the collar shrinks when subjected to a gentle heat source such as a hair dryer. The collar shrinks by up to 63 percent of the original size to provide a strong, neat water and vibration proof joint.Provides a neat water and vibration resistant jointEasy to shrink using a hair dryer or heat gunAvailable in a range of sizes to suit popular ducting hose diametersSold as a pair of collars.