×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Mechanical Seal for Latex

Mechanical Seal for Latex

Mechanical Seal for Latex

(OP)
I have tried every seal combination I know about to try and seal latex.  The problem remains the same.  The latex forms a coating on the seal faces that drive the faces apart and render the seal useless.

I saw on a forum that a knife edge seal is an option.  Has anyone tried this type seal?  Who is the mfr?  What kind of success?

Thanks for any help or guidance.

RE: Mechanical Seal for Latex

What have you tried so far?

RE: Mechanical Seal for Latex

I have seen a Bellow Design Knife Edge seal used on Latex in the past. It was a slow speed application so the seal was also designed to run eccentric and therefore clear away the latex from the seal face interface.

-
Milkboy

RE: Mechanical Seal for Latex

John Crane make a knife edge face design.  

You didn't mention what type of latex you are trying to seal.  Thermosetting latex could use a double seal which would require some extensive temperature control.

Other seal types to consider are the triple lip seal designs from Flowserve and Fluidol.

RE: Mechanical Seal for Latex

Depending on the mixture that you are using there must be a water contamination level that you can tolerate.

You should use double seals water flushed.  That will give you a little water contamination, but your seal internals will get all gummed up as they are not flushed with water.

My personal favorite is to use a labyrinh lower and mechanical seal upper combination.  Flush the seal cavity with water at slightly higher pressure than the pump cavity pressure and the labyrinth will be flushed clean.  The upper seal will ride on the water.

Best regards.

scalleke

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources