----- Original Message ----- From: "Jeff Dayman" <jeffdayman@xxxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Sunday, April 23, 2006 9:35 PM Subject: Re: [modeleng] plastic pipe > Ryton or Supec PPS, or Ultem PUI, will work with saturated (not superheated) > steam up to about 250 F at 30 psi. These are very expensive resins (over $14 > USD per kg for raw moulding pellets) and may or may not be available in > ready made tube form. Depending on surface area exposed to pressure you may > need glass reinforced resin. > > McMaster Carr (www.mcmaster.com) in USA or Boedeker Plastics in Texas may > have some ready made tube in stock. Be prepared for a price shock. > > For sealing these resins, if you need o-rings, you will need red hi temp > silicone, Kalrez, or Aflas o-rings for steam service. These are also more > expensive than nitrile o-rings, especially the Kalrez. > > I'd try and use metal tube meself. > > Good luck, Jeff Dayman Waterloo Ontario Canada > > > > ----- Original Message ----- > From: "alan stepney" <alan@xxxxxxxxxxxxxxxx> > To: <modeleng@xxxxxxxxxxxxx> > Sent: Sunday, April 23, 2006 9:19 PM > Subject: [modeleng] plastic pipe > > > > Does anyone know of any plastic pipe that will withstand low pressure > > (around 25-30psi) steam.? > > That is a temperature of around 275F, and I would have thought that may be > > within the range of some modern plastics. > > > > Alan > > > > MODEL ENGINEERING DISCUSSION LIST. > > > > To UNSUBSCRIBE from this list, send a blank email to, > > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject > line. > > > MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.