One of the most important aspects of security any sign or signal is to have a way to permanently hold the strap and the sign or signal in place. This is done, for most outdoor signs and signals, with the use of galvanized steel strapping seals.
These little devices are typically not something that most project managers spend a lot of time considering. However, by choosing poor quality, incorrect style or incorrect size of galvanized seals you may find that signs and signals start slipping or, even worse, become dislodged from their correct position and slide down, twist, or move on the pole.
Open seals, which may also be called snap-on type seals, are a very good general seal for a wide range of projects and jobs. These look like the three sides of a rectangle with the longer bottom missing before they are closed.
These galvanized steel strapping seals are simply placed over the banding where the ends overlap and are crimped with a stainless steels strapping tool to hold the band. This can be done when tensioning the band or after the desired tension is obtained.
These types of seals may also be called push type seals or closed sleeve type since the have to be pushed over the two ends prior to clamping to the banding. They are flat and hollow, allowing you to slide the seal into the correct location before using the strapping tool to tighten.
This is really the middle option in galvanized steel strapping seals between the open and the overlap seals. They have the two sides slightly compressed together but not fully closed. They are often used for heavier types of signage and signals since the can be partially treaded onto the banding or strapping prior to use.
In addition to different types of galvanized steel strapping seals there is also the option to choose from regular and heavy duty. Heavy duty seals come in all styles and are ideal for heavier types of strapping and those larger signs and signals.