Hi all, Ive been hearing quite confusing information regarding which Gaskets seem to be most effective in CLS's? I am trying to decide which to go with myself and would love to hear what others have to say or have experienced themselves.
Buna: just seems to be not FDA approved in any sense and likely not ideal? I know some use these.
Viton : Recently, Horatio D brought up the notion that Viton was easily leaching a black, distinct smelling residue when wiped with limonene and Alcohol I believe as well. But these are also widely used and so I'm sure there's lots of people who can weigh in on them, also is White Viton as prone to leaching?
PTFE: Super clean, great temp resistance, don't require heavy torque to seal, but so they hold up to regular use and if not, how often do they need to be replaced?
* SPX high pressure bolted clamps say that PTFE is NOT recommended and to consider Solid PTFE or Envelope Gaskets. Does anyone know why this is? Simply due to wear and tear or something more significant?
Solid PTFE : Dont know anything haven't found any of these
PTFE Envelope Gaskets: I see some have gone this route, and I am curious once the gasket is sealed whatever the center is made of (Viton Buna etc) this is no longer exposed and therefor won't come into contact with the solvent/solution or it will? Then you're dealing with 2 materials lol.
TUFF or Polysteel: these are PTFE and 316L stainless steel. Seems like 50lbs of torque is a lot, but is this the only down side to these? I also hear they can leak is not sealed at the correct temperature?
These seem to be uncommonly used so I haven't heard much other than that. I don't think These are ridiculous in cost if they are more of a one time purchase, maybe not just once but....Durability and longevity is key!
Cheers
Buna: just seems to be not FDA approved in any sense and likely not ideal? I know some use these.
Viton : Recently, Horatio D brought up the notion that Viton was easily leaching a black, distinct smelling residue when wiped with limonene and Alcohol I believe as well. But these are also widely used and so I'm sure there's lots of people who can weigh in on them, also is White Viton as prone to leaching?
PTFE: Super clean, great temp resistance, don't require heavy torque to seal, but so they hold up to regular use and if not, how often do they need to be replaced?
* SPX high pressure bolted clamps say that PTFE is NOT recommended and to consider Solid PTFE or Envelope Gaskets. Does anyone know why this is? Simply due to wear and tear or something more significant?
Solid PTFE : Dont know anything haven't found any of these
PTFE Envelope Gaskets: I see some have gone this route, and I am curious once the gasket is sealed whatever the center is made of (Viton Buna etc) this is no longer exposed and therefor won't come into contact with the solvent/solution or it will? Then you're dealing with 2 materials lol.
TUFF or Polysteel: these are PTFE and 316L stainless steel. Seems like 50lbs of torque is a lot, but is this the only down side to these? I also hear they can leak is not sealed at the correct temperature?
These seem to be uncommonly used so I haven't heard much other than that. I don't think These are ridiculous in cost if they are more of a one time purchase, maybe not just once but....Durability and longevity is key!
Cheers