I ditto Chrochetya's comments.
Hi!
I have sleep apnea and other things too. I am familiar with the mask you are speaking of.
If you are alergic to the gasket, get in touch with the Dr. that prescribed the mask to you.
He needs to replace the gasket or give you another mask that you are not alergic to.
I love this mask ResMed. I can sleep the whole night with this one. I have had several different types of mask and this fits the best.