larger diameter mechanical face seals
larger diameter mechanical face seals
(OP)
Greetings!
Does anyone know of a manufacturer that makes a seal with a 6" bore that can seal at least 750psi at 1800rpm? I have been looking into off the shelf mechanical seals for my application, and have noticed that most seals top out at around 400psi at this bore dia. and rotational speed.
If no such manufacturers exist, is there any reason why such a seal could not be custom designed?
Thanks for your help!
-Kristjan
Does anyone know of a manufacturer that makes a seal with a 6" bore that can seal at least 750psi at 1800rpm? I have been looking into off the shelf mechanical seals for my application, and have noticed that most seals top out at around 400psi at this bore dia. and rotational speed.
If no such manufacturers exist, is there any reason why such a seal could not be custom designed?
Thanks for your help!
-Kristjan





RE: larger diameter mechanical face seals
It will help if you can tell us what the product is to determine if the application is for a single or dual seal. It is unlikely that you will find an off the shelf seal for this application. When you get to this pressure, speed and shaft diameter, care should be taken in the design of the faces to minimise distorion and to ensure a fluid film is maintained. I would recommend Silicon Carbide Vs Carbon but this depends on the product. I have assumed a clean prduct. I would also consider the use of anti extrusion washers to prevent Oring extrusion. Otherwise this is an application for a High Duty Balanced Seal to ensure reliability.
RE: larger diameter mechanical face seals
RE: larger diameter mechanical face seals
Sorry, I forgot to mention we are just sealing water at room temperature. But yeah, it looks like we would need a custom seal for that sort of diameter. I am currently working on ways to use a smaller diameter seal.
If I can get the diameter down to 2.5" (which I think I can) then I can use a John Crane 8B1 seal which should give me around 800psi for my conditions.
Thanks again for your help, it was just the info I needed.
RE: larger diameter mechanical face seals
RE: larger diameter mechanical face seals
For this case, the peripherical speed is not high, 14,3 m/s. it should be a challenge if it was upper than 23 m/s.
Try Granpc Seals from Brazil, or its partner, in Russia, Trem Engineering, by contacting Willian Castro, wscastro@granpac.com.br.
http://www.granpac.com.br
http://www.tremseals.com
Let me know if it helps you!
Regards.
Mario Souza
Application & Product Engineering
WMF Solutions Brazil
http://www.wmfsolutions.com
RE: larger diameter mechanical face seals
What you have mentioned is just what we are design.
Aegis Mechanical Seal Co.,Ltd. is our group. Generally we produce SSiC,SiC with HIP for our clients. Also we give our advice to our clients in mechanical seal and fluid sealing line.
www.a-seal.com
www.aegisseal.com
Could you mail us your question with email?
paultsu@gmail.com