Features: -Used to seal housing canister to cap to prevent leaks in filter system. -Can be replaced with every third filter change. -Made in China. Product Type: -Whole house. Filter Component: -Installation accessories. Dimensions: Overall Height - Top to Bottom: -7 . Overall Width - Side to Side: -4 . Overall Depth - Front to Back: -0.125 . Overall Product Weight: -0.03 lbs. Faucet Filtration Mounted Refrigerator Sink Under Water Plumbing Water Accessories Installation holidays christmas gift gifts for girls boys