People often refer to "pipe dope" when talking about sealing threads of pipe fittings, but when I go to Home Depot or Lowes or whatever, I've never seen anything on the shelf labeled "Pipe Dope". This seems to be an old-fashioned word that people speak and understand, but it's not the correct, technical product name.
If I have been told that for a certain joint, pipe dope is a better choice than Teflon tape, what do I need to pick up at the hardware store? I don't particularly need a certain brand recommendation, but an example or picture of a product currently stocked at a major, national retailer would be great as an example. If the word "dope" isn't used, what other terms do I look for to find "pipe dope"?