Description
Product Overview
The Fluidmaster 5403 3-inch universal toilet flapper is engineered for reliability and efficiency in residential bathrooms. Constructed from high-quality rubber with a red silicone seal, it ensures a tight fit to prevent water leaks and reduce waste. Key specifications include dimensions of 5.25 x 9 x 3.25 inches, a 3-inch inlet and outlet connection size, and compatibility with 3-inch flush valves. This flapper features an adjustable design, allowing for simple customization to match various toilet models, and includes a kink-free chain for smooth operation. With a lifetime warranty and part number 5403, it is built to withstand frequent use while maintaining consistent performance.

Usage
This toilet flapper is ideal for homeowners and DIY enthusiasts looking to replace worn-out or inefficient flappers in standard residential toilets with 3-inch flush valves. It is commonly used in bathrooms to address issues like continuous running water, which can lead to higher utility bills and water damage. Suitable for daily use in households, it provides a quick fix for common plumbing problems without requiring professional assistance, making it a practical choice for routine maintenance and emergency repairs.
Why Choose Us
Fluidmaster stands out for its commitment to quality and innovation in plumbing solutions. This flapper boasts a durable silicone seal that resists degradation from chemicals and hard water, ensuring long-term leak prevention. The universal fit and easy installation process reduce the need for multiple purchases or complex tools, saving time and money. Backed by a lifetime warranty, it offers unmatched reliability and customer support, trusted by millions for its consistent performance and water-saving benefits.
Key Features
- Durable silicone seal for superior leak resistance and longevity
- Universal design compatible with most 3-inch flush valve toilets
- Easy installation with adjustable settings and kink-free chain
- Water-saving functionality to reduce utility costs and environmental impact
- Lifetime warranty for assured quality and customer peace of mind
FAQ
What toilets is this flapper compatible with?
This flapper is designed to fit toilets with 3-inch flush valves, making it a universal option for many residential models. Always check your toilet’s specifications before purchase to ensure compatibility.
How do I install the Fluidmaster 5403 flapper?
Installation is straightforward: remove the old flapper, adjust the new one to fit your flush valve, attach the chain without kinks, and test for leaks. No special tools are required, and it typically takes just a few minutes.
Does this flapper help save water?
Yes, by creating a tight seal, it prevents water from leaking into the bowl between flushes, which can significantly reduce water waste and lower your water bills over time.
What is the warranty coverage?
The flapper comes with a lifetime warranty from Fluidmaster, covering defects in materials and workmanship for the life of the product, providing long-term reliability.
Can I use this with a 2-inch flush valve?
No, this flapper is specifically designed for 3-inch flush valves. Using it with a 2-inch valve may not seal properly and could lead to leaks or inefficiency.




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