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submitted 1 week ago by [email protected] to c/[email protected]

It is more flexible in tight spaces without collapsing. The color and texture remind me of RTV gasket making silicone in automotive applications, but these (very old) tubes do not have any hint of the pungent oder of RTV gasket maker, or anything else for that matter.

I'm looking for a hose that is more flexible than typical rubber (like automotive) and PVC (gardening/aquariums) hose in a 1/4in or 6mm ID for ethylene glycol at pressures between 1 & 2 bar and at 30-100 C. I need to turn around a 50mm radius reliably with flexibility and without substantial (~15%+) constriction... If any experts are around – TIA

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[-] [email protected] 2 points 4 days ago* (last edited 4 days ago)

pungent oder of RTV gasket maker

Just if you're interested: there are a tonne of different silicone chemistries.

Single part curing (no mixing needed, cure when exposed to air):

  • Acetoxy (emit acetic acid)
  • Alkoxy (emit methanol)
  • Acetone
  • Ketoxime (don't know if this one smells)

Two-part curing (you have to mix the two components, then it starts setting):

  • Condensation cure (tin catalyst) cheaper
  • Addition cure (platinum catalyst) basically better in every way but more expensive
this post was submitted on 21 May 2025
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