Korky 100BP
Score: 90/100
Uming Universal Toilet Flapper
Score: 78/100Rankings
The Korky 100BP Ultra High Performance Flapper is a universal 2-inch toilet flapper designed to maximize flush performance while conserving water across various gallon-per-flush ratings. Constructed from exclusive chlorine-resistant red rubber, it offers superior durability in harsh water conditions and features adjustable settings for precise water optimization. It is best suited for homeowners with standard 2-inch toilets in areas with chlorinated, hard, or well water.
The Uming Toilet Flapper Replacement Kit is a budget-friendly 2-pack of universal 2-inch flappers designed for major brands like American Standard and Kohler. It features a tool-free clip-on installation and stainless steel chains. While it offers good value and broad compatibility for standard valves, it lacks adjustability and specific chemical resistance data.
| Attribute | | |
|---|---|---|
2 inchesbest | 2 inchesbest | |
1 count | 2 countbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Material & Durability(3) | ||
Seal Type | Sealing Ball | Clip-on |
Chlorine Resistance | true | N/A |
Hard Water Resistance | true | N/A |
Design & Features(3) | ||
Chain Adjustability | true | false |
Installation Type | DIY | Tool-Free |
Flapper Type | Adjustable Flapper | Universal Flapper |
Packaging & Support(2) | ||
Pack Quantity (count) | 1 count | 2 count |
Warranty Period | 5 Years | N/A |
Compatibility & Fit(4) | ||
Flush Valve Compatibility | 2-inch | Universal 2-inch |
Toilet Type Compatibility | Standard | Major Brands |
GPF Compatibility | 1.28-5 | 1.28-3.5 GPF |
Flush Valve Size | 2 | 2 inches |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and plumbing experts, including those from Clorox, highly endorse the Korky 100BP as the longest-lasting flapper available. Editors at supply sites praise its high performance and precise water control, noting that it significantly outperforms generic brands in chlorine resistance tests. The product is highlighted for its universal design, making it ideal for contractors who need a single solution for various toilet brands, with no performance drop across different flush volumes.
Everyday consumers rave about the product's longevity, with many reporting it lasted up to seven years in harsh water conditions. Users frequently praise the ease of installation, noting it takes only five minutes without tools. Common themes include strong flush performance despite water savings and perfect fits for brands like Kohler. Recurring complaints focus on the chain being too long and occasional initial seal issues that require adjustment.
“lasted 7 years in hard well water”
“5 minutes, no tools”
“saves hundreds of gallons yearly”
No direct professional reviews from major outlets like Wirecutter or Consumer Reports were found for this specific Uming kit. However, related universal flappers are praised by editors for eliminating size guesswork and fitting various GPF toilets.
Specific consumer reviews for the Uming kit are not available in the source data. General feedback on similar universal flappers indicates praise for quick fixes and broad compatibility, but recurring complaints involve sizing mismatches for non-standard valves.
