2nd Gen Features Upgraded Material and Reinforced Packaging for A Better Performance and Shipping Protection. Specifically Designed for American Standard VorMax toilets, Ensuring a Snug and Reliable Seal That Prevents Leaks and Enhances Flushing Performance. Made with a Synthetic Material That is 35% Thicker Than the Problematic Original Seal Flappers. Provide Superior Resistance to Wear, Blistering, and Deformation. Quick and Straightforward to Replace in 5 mins, so You Can Have Your Toilet Functioning Like New in Minutes. Save Money on Repairs, Water and Sewer Bills by Preventing Leaks and Ensuring Your Toilet Operates at Peak Performance. 1 Year Manufacturer Warranty Against Defects, Contact Us Through Amazon or Info on the Packing. Replacement Seals for 7381424-100.0070A American Standard VorMax Silicone Flappers