Why do toilet seats come loose? Toilet seats can come loose for many reasons, but there are two main causes: 1. Mounting holes in the toilet are larger in diameter than the toilet seat bolts which leaves room for the bolts to move around. This movement can cause the nut to “walk” loose over time. 2. Installers are unsure of how much to tighten the toilet seat. A toilet seat that is too loose can move around. On the other hand, over-tightening a toilet seat can damage the fastening hardware and put stress on the toilet itself. These and other factors can cause a loss in clamping force over time. Even if the seat was installed correctly, the system can eventually fail and cause a loose seat. As the world’s leading manufacturer of toilet seats, Bemis knew there had to be a better way. Bemis spent a year studying the mechanics and materials of fastening hardware, and how experienced installers do their work. The result is the STA-TITE® Seat Fastening System™, which prevents toilet seats from coming loose. How does the STA-TITE Seat Fastening System work? Both the original STA-TITE and new TOP-TITE STA-TITE® Seat Fastening System have two main components: 1. A molded bushing fills the mounting holes in the toilet, eliminating the bolt’s ability to move around in the mounting hole. 2. The STA-TITE nut shears off at a specific in./lb. of torque, which means no more guessing if the toilet seat has been tightened enough. These two components work together to prevent toilet seats from coming loose, solving the No.1 complaint about toilet seats according to Bemis’ consumer research. Why the change from the original STA-TITE to TOP-TITE STA-TITE? The original STA-TITE Seat Fastening System has been very successful for Bemis, and the patented system has saved countless hours previously spent retightening toilet seats. The new TOP-TITE approach makes installing a STA-TITE seat incorrectly more difficult, as the hinge cap will not close unless the bolt head has been sheared off. Also, the process of tightening a toilet seat from above the toilet is ergonomically friendlier than the previous approach of reaching underneath the toilet rim. Am I supposed to break the bolt head off? Yes! The TOP-TITE STA-TITE bolt head is designed to shear off at 40 in./lb. of torque. This is to let the installer know the seat does not need to be tightened any further. If the STA-TITE bolt head is not sheared off, the hinge caps cannot be closed! Why have adjustable hinges on a toilet seat? Not every toilet will be identically sized; even toilets made from the same mold will have minor variances. The most common issue that arises from these variances for toilet seats is that sometimes the seat will be slightly too long or too short for the bowl. By adding up to 3/8-in. Adjustability to the toilet seat, installers can correct for any variances in bowl size and ensure a perfect fit between toilet and seat.
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