The following is from a fly fishing reel site. Can anyone advise what Rulon is? A teflon knockoff perhaps?
The drag surface of the Terrapin is made up of stacked Rulon discs, a material rather new to the fly reel industry that has unbelievable tolerances. Rulon is rated for CONSTANT operating temperature ranging from –400*F to 550*F and has zero water absorption! Rulon is by far a better drag surface choice over carbon fiber and cork.
https://www.mcmaster.com/#rulon/=1b98ukr
We discussed this material in a few different threads back when we were exploring needle bearings, Teflon, Delron, or Rulon washers for under the main gear on star drags.
http://alantani.com/index.php?topic=23746.0
http://alantani.com/index.php?topic=22461.0
http://alantani.com/index.php?topic=17972.0
http://alantani.com/index.php?topic=11443.0
http://alantani.com/index.php?topic=7652.0
http://alantani.com/index.php?topic=12464.0
http://alantani.com/index.php?topic=12409.0
http://alantani.com/index.php?topic=15510.0
http://alantani.com/index.php?topic=13367.0
Hope that helps?
John
I have heard of it being used for impellers in water pumps. I believe my outboard motor's impeller is made from Rulon.
............Lou
I thought that Rulon was PTFE with added fibres - Okuma used it alot in their baitcaster reels - maybe a while back :-\
I believe your correct Chris. It looks like the inner pump housings are made of this and there's several different grades.
The impeller is made of Viton. I don't know what I was thinking. Oh well, this flu bug has given me brain fry. ???
............Lou