Silicone rubber boots are one of weatherproofing solutions for the cable connection. The rubber boot is made of silicone rubber which has good faxiblility and good mechanical properties comparing with cold shrink tubes. it is also suitable for L-shape connectors.
Silicone boot is pre-installed on the cable, simply slide the boots up the cable and over the connectors, so install faster and simple.
This causes inconvenience installation for other type weather proof products.