High temperature o-ring
High temperature o-ring
(OP)
Here's a tall order.
I wish to seal over water pipe (o.d. 15mm) with a seal that allows easy withdrawal of pipe for maintanance. Something similar to an o-ring. Must be able to withstand temperatures up to 500C.
Cant think of an elastic materal that can withstand such temperatures. And I am aware water will not be liquid at such temperatures
Pressures shouldn't rise above 4 bar.
Thanks





RE: High temperature o-ring
RE: High temperature o-ring
RE: High temperature o-ring
RE: High temperature o-ring
RE: High temperature o-ring
Dan
www.eltronresearch.com
Dan's Blog
RE: High temperature o-ring
I've used a leaded steel or bronze alloy effectively to get a seal in Ball Valve applications. Consider a soft metal, maybe a thermal plastic which is what is used in Check Valves.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: High temperature o-ring
I'll have to start thinking.
RE: High temperature o-ring
Samples, linked below. You could use a similar system to resolve your problem. There are many different systems available from other suppliers.
There are 2 primary ways to accomplish what you are trying to
do. One is to use a high temperature seal or move the primary
seal to a cooler area. I've used both methods to achieve both
dynamic and static seals on steam and polymer systems.
If you decide to use the packing gland at temperature approach as mentioned above their are still some packing available that work very well under your conditions. These packings incorporate mica, graphite, or asbestos. We use one that is an asbestos fiber with mica and a pinch of graphite.
If you decide to go the cool gland approach all you have to do is cool down to less than 300F.
http://www.alspi.com/access.htm