Creality Original 3D Printer Heater Block Silicone Cover MK7/MK8/MK9 Hotend
Creality 3D Printer Heater Block Silicone Cover, 3D Printer Heater Block Silicone Cover, The Best 3D Printer Kit, Creality 3D Printer Kit
Results of our analysis:
We analyzed 9,770 reviews for 71 products in the 3D Printer Accessories category.
We then analyzed 34 reviews for this product. Of these, 6 reviews were recent.
Around 71% of reviews were positive and about 18% were negative.
Final Score:

9.00 out of 10, based on these factors:
What buyers say about Creality Original 3D Printer Heater Block Silicone Cover MK7/MK8/MK9 Hotend
I am pretty sure that Creality has updated their design, since they have a smaller nozzle hole, they fit more tightly around the nozzle, and cover a bigger part of it with just the tip poking out.
It's easy to install and does the job, it's a good fit over the standard heater block for ender 3.
It only took seconds to install as the fit on my hotend was perfect.
This is a perfect replacement for the stock cover that got stuck in the extruder.
The Longer lk4 pro hot-end fit perfectly, keeping the temp slightly more stable.
Common Questions
Will it fit the cr6 se?
I tried it on my own and it didn't fit.
Would it fit the Ender 5?
long as the hot end is the MK8 from creality, it should.
Will they work on the cr-10s mini and cr-10s pro?
It should as long as you have a microswiss hotend.
Is there a glue stick included?
You need a glue stick for these, they just fit over the hot end to insult it.
Why bother with my ender 3, which came with one? I used it for a week before discovering it wasn't packing material.
Silicone socks on the hot end are necessary to detect a consistent temp. Fluctuating temp causes jams and clogs and thermal runaway, which is why eventually the silicone will become brittle and crack and rip.