Official Creality Ender 3 s1 Heater Silicone Sock, Heater Block Silicone Cover for Creality Ender 3 S1/Ender3 S1 Pro/CR10 Smart Pro/Sermoon V1/Sermoon V1 Pro 3D Printer (Pack of 5)

These fit the hotend well, appear to be OEM or just as good as OEM... we never can really tell if Creality parts being sold online are original or knockoffs, but these seem good to go.

ive only had to use one but just as good as the stock one that come on my ender3v2

No complaints from my son and he prints every day!!!

I tore down my hot end for the first time and destroyed the insulation. After several attempts of printing without any, I thought my thermister broke. I happened to find that silicone socks exist and tried these. All my problems were fixed and temps are kept as well or better than the stock insulation. Easy to install and even kept the heat cartridge in place after I lost the grub screw. The only con is a slight smell when it first heats up, but it dissipates after a few minutes.

A hung print tore my stock silicone cover. This one performs far better than the stock one. The nozzle is mostly covered by the sock. This prevents stringing from sticking to the nozzle and causing issues

fit my Longer lk4 pro hot-end perfectly. keeps temps slightly more stable. the real advantage comes from less heat blowing down onto the print.

Great silicone sock, but its of the new style that covers a lot of the nozzle, which can snag on a part of it slips down a touch. Ruined 3 prints.

Fit my Ender 3 no problem. Doesnt actually cover the side with the thermistor or heater cartridge, but doesnt seem to matter.