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.

Product ID: 266654048

Details

Brand
Fluidmaster
Exterior finish
Stainless
Inlet connection size
2 Inches
Item dimensions L x W x H
10.2 x 17.8 x
Material
Vinyl

💧Adjustable water-saving flapper

🔧Universal 2-inch valve fit

⏱️5-minute quick install

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Description

🚽 Fix fast, save water, flush smarter!

WATER SMART FLAPPER - PerforMAX adjustable dial lets you control flush volume, saving water and cutting costs effortlessly.
LEAK FREE RESTORATION - Replace worn, leaky valves and flappers to stop waste and avoid costly water bills—upgrade your bathroom’s efficiency.
UNIVERSAL COMPATIBILITY - Fits most 2-inch flush valves from modern 1.28 HET to classic 3.5 GPF toilets—one kit, endless fixes.
SWIFT 5 MINUTE INSTALLATION - Peel-and-stick design means no tank removal or messy glue—get it done fast and hassle-free.
DURABLE CORROSION RESISTANT - Built to last with premium materials and backed by a 5-year warranty—reliable performance guaranteed.

The Fluidmaster 555CRP8 Universal PerforMAX Flush Valve Repair Kit offers a fast, peel-and-stick installation for most 2-inch toilet flush valves. Featuring an adjustable water-saving flapper, it fits toilets ranging from 1.28 to 3.5 gallons per flush. Made with corrosion-resistant materials and backed by a 5-year warranty, this kit repairs leaks and improves efficiency without tank removal.

Specifications

ASIN	B00002N6MI
ASIN	B00002N6MI
Brand Name	Fluidmaster
Connector Type	Barb
Country of Publication	China
Country of origin	China
Customer Reviews	4.4 4.4 out of 5 stars (1,800)
Customer reviews	4.4 4.4 out of 5 stars (1,800)
Date First Available	21 September 2023
Department	Teak
Exterior Finish	Stainless Steel
Global Trade Identification Number	00039961000392
Included Components	Fluidmaster 555CRP8 5 Minute Flush Valve Repair Kit
Inlet Connection Size	2 Inches
Inlet Connection Type	Barb
Is Discontinued By Manufacturer	Yes
Item Dimensions	10.2 x 17.8 x 17.8 centimeters
Item Type Name	Fluidmaster 555CRP8 5 Minute Flush Valve Repair Kit
Item Weight	0.3 Pounds
Item model number	555CRP8
Manufacturer	Fluidmaster
Manufacturer	Fluidmaster
Manufacturer Part Number	555CRP8
Material Type	Vinyl
Model Number	555CRP8
Number of Ports	2
Outlet Connection Size	2 Millimeters
Outlet Connection Type	Barb
Product Dimensions	10.16 x 17.78 x 17.78 cm; 136.08 g
Size	2 In.
Specification Met	WaterSense
Thread Size	2 inches NPT
Thread Type	NPT
UPC	039961000392
Unit Count	1 Count
Valve Type	flush valve

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$20.84

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

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