3" Toilet Flapper, Rubber

Professional Replacement – Korky G-Max 3-Inch Toilet Flapper

The Korky G-Max 3-Inch Flapper is engineered to restore and maintain reliable toilet performance in TOTO G-Max flushing systems. Designed with an oversized sealing surface and manufactured from durable red rubber, this component ensures a consistent seal to prevent water loss and improve system efficiency.

Why Use the Korky G-Max Flapper?

This flapper is the specified replacement for TOTO models THU138S, THU175S, and THU331S. Contractors rely on its precision fit and long service life, reducing the risk of callbacks and improving installation efficiency. Its high-grade rubber resists chlorine, bacteria, and hard water—common causes of premature flapper failure.

Key Advantages

• Oversized Seal – Designed for TOTO 3-inch flush valves to ensure a tight, reliable seal.
• High-Grade Red Rubber – Formulated for resistance to water treatment chemicals and extended durability.
• Secure Chain Assembly – Includes stainless steel chain for positive, long-term operation.
• Direct Replacement – Matches OEM specifications for proper function with G-Max systems.

Technical Specifications

• Material: Chlorine-resistant red rubber
• Valve Size: 3-inch flush valves (TOTO G-Max models)
• Model Compatibility: THU138S, THU175S, THU331S
• Included Hardware: Stainless steel chain
• Warranty: 5 years

Installation Considerations

Installation of the G-Max flapper can typically be completed in minutes. Contractors should verify valve surface cleanliness before seating the flapper to ensure a proper seal. For homeowners attempting installation, only basic hand tools are required, but careful placement is critical to prevent leakage. Professional installation is recommended for multi-unit or commercial applications where reliability is paramount.

Contractor & Maintenance Benefits

For Contractors: A proven, OEM-specific replacement that reduces repeat service calls and provides consistent results on job sites.

For Maintenance Personnel: Straightforward replacement process allows for fast, reliable repairs with minimal downtime.

Summary

The Korky G-Max 3-Inch Flapper delivers a precise fit and long-lasting performance for TOTO G-Max toilets. Its oversized sealing surface, chemical-resistant rubber, and reliable chain assembly make it the professional’s choice for maintaining efficient, leak-free toilet operation.