PTFE, polytertafluorethylene polymer, known also under the commercial trademark Teflon is a non sticking plastic, soft material which can be used up to temperatures of about 570 Kelvins. When used in making watertight seals on tubing, just tightly wind it on the threat and what is over the necessary amount will be pushed out during tightening because PTFE is very soft.
There are many places where one can purchase PTFE tape. One can purchase PTFE tape at popular on the web sources such as Office Depot, Walmart, and Filters Fast.
Dupont
Plumbers tape for emergengys
Teflon
Plumbers tape for emergengys
PTFE or UHMW
For thread sealent EXCEPT for gas then you need a PTFE approved for fuel and other gases
PTFE does not have it's own recycling code symbol. However, PTFE can be recycled into many other products. Recycled PTFE can be used for rods, tubing, tape and more
tape
Plumbers tape is generally a very thin white tape also called thread tape and PTFE tape. It is used on threads to seal joints.
Few weeks
I believe around the 1970's