If you don't have gaskets available, you can try using alternative materials that are soft and flexible enough to create a snug fit between the neck and the head of the Blythe doll. Some possible alternatives include thin rubber sheets, silicone putty, or even layers of fabric. However, it's essential to ensure that whatever material you use is safe for the doll and won't cause any damage. Additionally, you may need to adjust the thickness or shape of the alternative material to achieve the desired fit.
EDELWEISS DAY custom blythe doll