None of the industry standard plastic jars can withstand temperatures over 220 degrees F.
Polypropylene has the best heat tolerance. Pet has the lowest temperature tolerance with the melting point around 140 degrees.
The size container to hold an eighth is dependent on the size of your buds. Tight dense buds will easily fit in our 30 dram jars, loose big fluffy buds often require our 40 dram size. We always recommend testing with samples.
PET plastic material has an excellent oxygen barrier. The closures are lined with PE foam. We believe that this combination yields an air tight package. We encourage you to test our products to satisfy yourself.