Feature●[Why Red Disc Seal is Needed] The Red Disc Seal addresses a common but a hidden issue. Tub spout could develop a leak without you knowing it, until it’s too late. The slip-on spout fits over a pipe. If there is ANY exposed/unsealed area around the pipe, water will get behind the finished wall. Then, you’ll notice water damage on the walls and the ceiling.●[Easy Return Policy] If you are not 100% satisfied, return the product within 30-days for a FULL refund. And, we’ll also pay for the return shipping.●[Support] We are a small US company out of Texas and we are here to support you with your needs. Please contact us with your comments and questions. [Online Support] Check out our videos on Amazon, “How to install Red Disc Seal”, “Which Red Disc is Right for You?” and “How to Hide Red Disc Seal Under the Spout”●[Why Red Disc Seal] The Red Disc Seal is designed to seal the hole behind the spout using a one piece rigid disc and a precision o-ring. O-ring seals against the pipe and the disc creates a very tight nest for the o-ring. This nesting is the key to creating a watertight seal.●[Pipe Sizes?] Even thought the Copper pipe is called ½” Copper pipe, ½” refers to the inside diameter (ID) of the pipe NOT the outside diameter (OD). Therefore, the Red Disc Seal’s center hole is slightly larger than 5/8”. That being said, check out our video titled "Which 1, 2 or 3". It explains the different pipe sizes, Copper pipe and Galvanized steel pipe. If there is still a question regarding if Red Disc Seal will fit or not, please send us a message. We are right here in US.●[Easy to install] 1. Remove the tub spout, 2. Clean the copper pipe, 3. Apply silicone caulk to the back of the Disc, 4. Slip the disc over the pipe and push it against the wall, 5. Apply silicone grease to the o-ring and slip it over the pipe, 6. Key step, seat the o-ring in to the back groove of the disc. See our detained installation video from an actual installation.Description [Why Its Needed] The Red Disc Seal was developed in 2017 to address a common but well hidden issue. Bathtub spout could develop a leak without you knowing it until it’s too late. I have a YouTube video discussing this in depth. The jest of it is that slip-on style bathtub spout goes over a ½” Copper pipe (the actual OD of the pipe is bigger than ½”, it is 5/8”). The spout seals against the pipe using an o-ring. Each time spout is removed and reinstalled or just over time, this seal is compromised. Next, each time the shower is used, spout will divert the water from tub to the showerhead. However, not all the water makes it to the showerhead, some will ride along the ½” Copper pipe towards the wall. If there is ANY exposed/unsealed hole around the Copper pipe, water though it, past the finished wall. Then, after awhile, wall and ceiling damage due to water leaking is noticed.