Step 1: Fact
Teflon, polytetrafluoroethylene (PTFE), has strong C-F bonds, is chemically inert and has a very low surface friction, so food does not stick.
Step 2: Others
PVC is for pipes. SBR and Buna-S are the same synthetic rubber, used for tyres.
Final Answer:
Teflon is used in nonstick cookware.
\[ \boxed{\text{(B)}\ \text{Teflon}} \]