Volcano Heat Block is what you have so any sock compatible for this. Use those search terms. Something like this:

HICTOP E3D Volcano Heater Block Silicone Socks Silicone Cover fits for Artillery SW-X1 and Other Similar 3D Printers Pack of 3 https://smile.amazon.com/dp/B09F6NFH1R/ref=cm_sw_r_apan_glt_i_J781EBTSTBTPQGKJCVA4