Evaded justice for years by bribing and threatening jurors and witnesses

Nothing stuck to Mafia boss John Gotti who evaded justice for years by bribing and threatening jurors and witnesses.That earned him the name the Teflon Don after one of the slipperiest materials on Earth.Teflon was in the spacesuits the Apollo crew wore for the moon landing,in pipes and valves used in the Manhattan Project,and maybe in your kitchen as the nonstick coating on frying pans and cookie sheets.So what is this slippery solid,and why doesn't anything stick to it?