Got this from Saran Wrap...
Thank you for your email regarding the safety of wrapping hot brisket in Saran™ brand plastic film
The softening point of Saran™ brand plastic film with Cling Plus is 195°F. Please keep in mind that foods higher in fats or sugars heat up quickly and retain heat longer than other foods.
We recommend you call our Product Safety Department at 1-866-231-5406. They will be able to address your addition questions.