You have a couple of options. That said, measure your current gasket carefully to get a proper match. Seal the door properly or you are wasting your time as the seal keeps the temperature down.
Sears PartsDirect: Sears PartsDirect offers official Sanyo compact refrigerator parts, including door gaskets. You can search for the specific part you need on their website. Remember to check the model compatibility to ensure a proper fit. Official Sanyo compact refrigerator parts ' Sears PartsDirect
Parts Town: Parts Town also provides OEM Sanyo refrigerator parts, including the 8330331651800 REFRIGERATION DOOR GASKET. You can find this replacement part on their website as well Sanyo 8330331651800 REFRIGERATION DOOR GASKET ' Parts Town
Official Sanyo SR-366S compact refrigerator parts ' Sears PartsDirect
What worked for me was a E12 size LED Light Bulbs 5W (50 Watt Halogen Equivalent) Color: Daylight 6000k.
It looks great!
I found mine on Amazon.
Keep in mind you want the longest threat length possible because the light socket has around a 1/4" extension past the threats and I really need to tighten it quite a bit before it turned on. A 1-1/2" long bulb (not included threaded area) fit perfectly.
If you plan to remove the thermostat/ switch, you must 1st remove the screw in the top back and then slide the thermostat assembly towards you and it will come free.