Aokin 3D Printer Hotend Silicone Sock Heater Block Silicone Cover for Creality Ender 3, Ender 3 Pro, Ender 5, Ender 5 Pro, CR-10/10S, Anet A8, MK7/8/9 Hotend, Blue, 3 Pcs

the nozzle opening isnt a snug fit/too large and there is an extra opening on one side near the heater and another opposite of it for the leads for the heater and thermistor that arent lined up. i dont have other brands of machines to be able to say if it fits the ones described above. hth

My rubber insulators that came Factory on my Ender 3 work fine but I thought I would try these out as a cheap upgrade and they are much better than the ones included with the Ender 3 they seem to keep the heat down a little bit more and since I changed the nozzle to hardened steel from brass I needed to play around with the temperature to keep it cool.

Worked just like the one that originally came with it. But ended up tearing when I had a clog. Its been a few months and still using the first one.

The socks do help a lot with keeping the hotend from getting all gunked up and as far as insulating for temperatures, not sure if it really helps too much. Performance I have found with the end piece will not really be affected =)

Ive tried a few different silicone socks that were either included with my Ender 3 or came from other sources (including the bright blue one included with the Micro-Swiss hot end) and these fit perfectly with both my heater block and the various nozzles Ive used. Compared to some of the other socks Ive gotten, this one seems to fit just right over the top of the heater block while others seem a touch too short.

Exact fit

Do not stay in place when at temp. Flex and sometimes fall off. Poor quality.

These are great to have to prevent heat block buildup. They also make clean up easier whenever messes happen.

Fits perfectly on my replicator 2 and hasnt fatigued a bit in the last 100 plus hours of printing.

Perfect fit for my Ender 3