Is "2 inches" the outer diameter of the flapper, or the size of the hole it fills?

Size of the hole it fits. They generally come in two sizes 2 in. and 3 in.

Is "2 inches" the outer diameter of the flapper, or the size of the hole it fills?

2" is the hole. The flapper is 3".

Will it stick to the ceramic material of the water tank, or just to plastic?

If you mean if it will seal (to prevent leaks) between fludhes, I think that either material will work if the material is smooth and free of any cracks or material. The water presdure in the tank will kerp it seal until it is flush. Or that is the idea. Good luck.

Does this fit fluid master 300

all i know is that this thing did not fix my problem, the flap is still leaking

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Fluidmaster 555CRP8 Universal PerforMAX 5 Minute Toilet Flush Valve Repair Kit 2 In.

Fluidmaster 555CRP8 Universal PerforMAX 5 Minute Toilet Flush Valve Repair Kit 2 In.

Product ID: 19188184

Details

Brand
Fluidmaster
Exterior Finish
Vinyl
Inlet Connection Size
2 Inches
Inlet Connection Type
Barb
Item dimensions L x W x H
4 x 7 x 7
Material
Vinyl

💧Adjustable water-saving flapper

⏱️5-minute peel & stick install

🛠️Universal 2-inch valve fit

€ 37.50

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚽 Flush Smarter, Save Water, and Join the Eco-Savvy Elite!

TRUSTED INDUSTRY LEADER - From Fluidmaster, the #1 toilet repair brand worldwide since 1957.
UNIVERSAL COMPATIBILITY - Fits most 2-inch flush valves from modern 1.28 HET to classic 3.5 GPF models.
CUSTOMIZABLE FLUSH EFFICIENCY - Dial in your perfect flush volume to save water and cut costs effortlessly.
DURABLE CORROSION RESISTANT - Built to last with premium materials backed by a 5-year warranty.
SWIFT PEEL STICK INSTALLATION - Upgrade your toilet in just 5 minutes—no tank removal, no mess.

The Fluidmaster 555CRP8 Universal PerforMAX Flush Valve Repair Kit offers a fast, peel-and-stick installation that fits most 2-inch toilet flush valves. Featuring an adjustable water-saving flapper, it replaces inefficient or leaky valves to reduce water usage and save money. Made from corrosion-resistant materials and backed by a 5-year warranty, this kit is a durable, eco-friendly upgrade trusted by professionals and homeowners alike.

Specifications

ASIN	B00002N6MI
Best Sellers Rank	#21,704 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #28 in Toilet Flush Valves
Brand Name	Fluidmaster
Connector Type	Barb
Customer Reviews	4.4 4.4 out of 5 stars (1,924)
Exterior Finish	Vinyl
Global Trade Identification Number	00039961000392
Included Components	Fluidmaster 555CRP8 5 Minute Flush Valve Repair Kit
Inlet Connection Size	2 Inches
Inlet Connection Type	Barb
Item Dimensions	4 x 7 x 7 inches
Item Type Name	Fluidmaster 555CRP8 5 Minute Flush Valve Repair Kit
Item Weight	4.8 ounces
Manufacturer	Fluidmaster
Manufacturer Part Number	555CRP8
Manufacturer Warranty Description	Warranty
Material Type	Vinyl
Model Number	555CRP8
Number of Ports	2
Outlet Connection Size	2 Inches
Outlet Connection Type	Barb
Size	2 In.
Smart Home Compatibility	Not Smart Home Compatible
Specification Met	WaterSense
UPC	039961000392
Unit Count	1.0 Count
Valve Type	flush valve

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