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.

Lefix Replacement Lcd Panel Adhesive Tape Strip Sticker Opening Wheel

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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$U1976

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Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖥️ Unlock flawless iMac screen repairs with precision and ease!

PRO GRADE PACKAGING - Robust box protects adhesive strips from damage, so you get pristine materials ready for your upgrade.
ALL IN ONE REPAIR KIT - Includes specialized opening wheel tool for seamless, damage-free screen removal and replacement.
TAILORED COMPATIBILITY - Specifically designed for iMac 27" A1419 (2012-2015) ensuring a perfect fit every time.
DURABLE RELIABLE SEAL - High-quality adhesive guarantees long-lasting hold, maintaining your iMac’s sleek, factory finish.
FLAWLESS I MAC DISPLAY REATTACHMENT - Premium adhesive strips engineered for perfect, dust-free installation on iMac A1419 models.

LeFix Replacement LCD Panel Adhesive Tape Strip Sticker + Opening Wheel Tool Kit is a professional-grade repair solution designed exclusively for iMac 27" A1419 models from 2012 to 2015. This kit includes six premium adhesive strips and a specialized opening wheel tool, all housed in protective packaging to ensure pristine condition. Engineered for perfect fit and maximum adhesion, it enables millennial professionals to confidently upgrade or repair their iMac displays with a clean, durable seal that preserves the device’s original look and performance.

Specifications

ASIN	B07GX8DFNB
Are Batteries Included	No
Best Sellers Rank	#39,657 in Computers ( See Top 100 in Computers ) #49 in Computer Repair Kits
Brand	LeFix
Color	A1419(27")
Customer Reviews	4.6 4.6 out of 5 stars (1,831)
Date First Available	2 December 2018
Item Weight	50 g
Item model number	946-4547
Manufacturer	LeFix
Package Dimensions	41.79 x 5.2 x 1.2 cm; 50 g
Standing screen display size	17 Inches

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