×
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

Neoprene O-ring gasket

Neoprene O-ring gasket

Neoprene O-ring gasket

(OP)
I am trying to determine the gasket factor, m, and the seating stress,y, of a 1/2" neoprene type o-ring gasket.

ASME VIII, Div 1 (table 2.5-1) states that these are self-energizing and that the m and y values are both zero.

Can I really use valued of 0 for both of these?  I am trying to determine my bolt loads required to seal.

Thanks in advance.

RE: Neoprene O-ring gasket

Parker manual on line

depending on whether static or dynamic seal, the goal is initially to compress the o-ring 10% or so, and that is built into the geometry via groove dimensions.
If the bolts are securing a cover, then they must apply enough preload to clamp metal-to-metal (easy) and also withstand whatever maximum pressure is going to be without allowing the joint faces to separate and release or even just upset the o-ring.

Improper  finishes on any of the 3 sealing surfaces can create a curious problem situation with leaks at low pressure, OR high pressure OR  when pressure changes.

RE: Neoprene O-ring gasket

engpes, confirm, m & y = zero for O-ring gasket.

Please note, you are not determining bolt loads required to "seal", just bolt loads to use for flange design.

Regards,

Mike

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