The Silicone Packet Single Use (5 grams) is a pack of silicone gel that is to be used to lubricate the O-ring during filter change. The use of silicon on the O-ring prevents damage especially during filter change. Changing filter without applying lubrication causes damage to the O-ring due to it getting pinched. Silicone gel also causes sealing of the O-ring preventing leaks. Leaks are the major cause behind water damage and flooding in homes. Another benefit of gel is that it prevents the filter housing from sticking and making it impossible to remove during filter change. The gel can be applied on the threads of the filter to remove. The gel comes in a 5 grams pack.