PTFE Envelope Gasket Material: PTFE, rubber, and other non metallic material Standard: GB/T 19001-2008/ ISO900 FDA grade Factory price We can offer all kinds of PTFE sealing gaskets made of virgin PTFE(standard and modified),and filled grade of PTFE(compo
Each top side has a tear notch which is easy for you to openZipper is installed just below the tear notch,it is heat sealed onto the inner materialBottom gusset can help bags stand up and enlarge its capacity