Better Than Wax, No Leaks, Worry Free Toilet Seal, Fits Any Drain, Any Toilet, Can Be Repositioned During Installation, & Excessive Plunging Won't Cause Leaks, Don't Have To Worry About Getting Wax On Your Hands, Floor & Toilet, No Minimum Temperature Required For Installation, Seals On Uneven Floors Or Over Tile Floors With Recessed Flanges, Includes A Stackable Wax Free Seal, Slide On Spacer & No Rust Brass Bolts & Hardware, 10 Year Warranty.