Silicone Lubricant for O-rings, Gaskets & Seals, Small .1 oz Packets, Water Filter Housing O-ring Lubricant (3) Protects your o-rings extending their useful life Works on all brands of water filter housings Resealable, waterproof plastic bag Meets FDA 21 CFR 175.300 ANSI/NSF 61 Helps provide a good seal to prevent water leaks