Would this work for a 2019 21.5 4K iMac?

No. The tape strips work for a 27" monitor -- the length and placement of the notches won't suit a 21.5"

How difficult is it to remove this adhesive if the machine needs to be re-opened once sealed back up with these strips?

It is not hard to remove at all. One week after i used those strips, the screen fell off of my computer while i was sleeping. I bought a new screen but the logic board got damaged so now i have an 2020 i9 iMac that does not work. I would recommend the the 3M strips instead.

Is there any diagram how to use it? The strips look confusing and fragile. There must be a diagram provided either in this product page or in the box.

If you're talking about where the strips need to be installed I had wondered the same thing until I searched also on Ebay then it showed a diagram. #11 goes in the top left, #12 top right, #13 Right side and so forth all going clock wise in # order.

Anyone know if this will work on Late 2013 14,1 iMacs? 21.5”

14.1?it's fit for Late 2013 iMac 21.5" machine.

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LeFix Replacement LCD Panel Adhesive Tape Strip Sticker + Opening Cutting Wheel Tool Kit for iMac 21.5'' 2012 2013 2014 2015 A1418

LeFix Replacement LCD Panel Adhesive Tape Strip Sticker + Opening Cutting Wheel Tool Kit for iMac 21.5'' 2012 2013 2014 2015 A1418

Product ID: 80281293

📏Precision-fit adhesive strips

🖥️Exclusive for iMac 21.5'' A1418

🛠️Pro-grade opening wheel tool kit

99 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🖥️ Unlock flawless iMac repairs with precision and ease!

TRUSTED BY THOUSANDS - Ranked #12 in Computer Repair Kits with a stellar 4.6-star rating from over 2,400 users.
ALL IN ONE REPAIR KIT - Includes premium opening wheel tool for effortless, damage-free screen removal and installation.
PERFECT FIT EVERY TIME - Tailored adhesive strips for iMac 21.5'' A1418 models (2012-2015) ensure seamless reassembly without compromise.
DURABLE RELIABLE ADHESION - High-quality adhesive strips guarantee a secure, long-lasting seal after every repair or upgrade.
PROFESSIONAL GRADE PACKAGING - Solid protective box keeps adhesive strips pristine and ready for flawless application.

LeFix Replacement LCD Panel Adhesive Tape Strip Sticker kit is designed exclusively for iMac 21.5'' A1418 models (2012-2015). It includes six precision-cut adhesive strips and a professional-grade opening wheel tool, enabling clean, damage-free screen removal and secure resealing. Packaged in a protective box, this kit ensures reliable, long-lasting adhesion and is highly rated by thousands of users for quality and ease of use.

Specifications

ASIN	B07H32CHBJ
Best Sellers Rank	#12 in Computer & Mobile Device Repair Kits
Customer Reviews	4.6 4.6 out of 5 stars (2,420)
Date First Available	January 24, 2018
Item Weight	1.76 ounces
Item model number	A1418
Manufacturer	LeFix
Package Dimensions	16.54 x 2.05 x 0.51 inches

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