3 pack of 1 gram tubes of silicone lubricant for o-rings, especially those on membranes, membrane housings, and filter housingsProduct FeaturesSilicone Lubricant3 pack of silicone lubricant to be used on o-rings when replacing membranes or o-rings on filter and membrane housings3 Pack of 1 gram TubesEach 1 gram tube of silicone is enough for multiple applicationsProduct DescriptionIt is recommended to use silicone lubricant on all o-rings with each membrane and filter change to ensure that your membrane and housings are not tearing or ripping and are completely sealing to prevent costly and messy water leaks.More Info