×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Diff btw PTFE and Elastomers

Diff btw PTFE and Elastomers

Diff btw PTFE and Elastomers

(OP)
Please what are the significant Diff btw PTFE and Elastomers?

RE: Diff btw PTFE and Elastomers

With regard to valve seating, PTFE is a more harder material and does not have the plasticity of elastomers such as Viton, Buna, EPR etc. Selection of PTFE/Elastomeric seats should be driven by the application. In the past we limited PTFE to higher temperatures but had to heat the valve up during shop floor testing (simulating the actual process condition) in order to obtain a better seal.

*** Per ISO-4126, the generic term 'Safety Valve' is used regardless of application or design ***

*** 'Pressure-relief Valve' is the equivalent ASME/API term ***

RE: Diff btw PTFE and Elastomers

The major difference, PTFE is a plastic and elastomers rubber. PTFE is good for static applications, not so good for dynamic. PTFE is often coated on to an elastomers for applications that require resilience.

RE: Diff btw PTFE and Elastomers

Major differences in Poisson's ratio, tensile strength, low temperature rating, high temperature rating, tensile strength, compressive strength, chemical compatibility, wear resistance, creep, machineability, hardness (durometer), cost, and a several more things. Only listed some of the major differences.

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close