> How do you tell if it's teflon or nylon? Weigh it. Almost all flavors of teflon (PTFE, TFE) have a specific gravity greater than 2. (ie, they weigh more than twice that of water under standard conditions) Most nylons are between 1.0 and 1.4. Teflon has a smaller coefficient of friction too...it's more "slippery", which is what you really want. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.