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I used one of these in my last few extractions and it worked fine, but after the first one the plastic lid was warped. After the second one the lid wouldn't fit on the dish at all. Now I'm just using plastic wrap with a book sat on top. Works just fine. Maybe you could put some plastic wrap over the dish first, and then put the lid over the top of that.

Wow didnt think of that!

Dont use plastic wrap its way worse. It will get eaten by the naptha. Use aluminium foil or just use a dish with a glass cover.

Common plastic wrap is made from LDPE


E : 30 Days of constant exposure causes no damage. Plastic may tolerate for years.

G : Little or no damage after 30 days of constant exposure to the reagent.

F : Some effect after 7 days to the reagent. The effect may be crazing, cracking, loss of strength or discoloration.

N : Not recommended. Immediate damage may occur. Depending on the plastic, the effect may be severe crazing, cracking, loss of strength, discoloration deformation, dissolution or permeation loss.

Wayfaerer try to do reasearch before smoking plastic mixed with DMT. If your plastic lids warped why do you have the terrible idea to use yet another thinner and weaker less resistant plastic to cover the pulls? And why would you give that bad advice to other people?

k. I've seen it suggested elsewhere and in this forum many times but whatever, it's my bad and I'm a terrible person.