×
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

O-ring seal

O-ring seal

O-ring seal

(OP)
Does anyone have any real data on the improvement in reliablity(if any) of a static gland seal that uses 2 o-ring seals instead of one in a low pressure (500 psi max) application

RE: O-ring seal

In the marine/underwater enviroment most manufactures use two o'rings in critical areas eg end caps which are opened often and single o'rings in static locations only to be replaced during regular service.
through my own experience the second o'ring has saved the day.
only my opinion know data to prove it.

RE: O-ring seal

I have used a 2 seal design for high vacuum applications, where I otherwise would get a very tiny leak through the seal upon moving it. The space in between the two seals is pumped to a rough vacuum, thus tiny leaks past the first are pumped away before going though the secound.
   You could perhaps do something similar by either having the intermeadiary space pumped, or simply to provide a small "reservoir" volume to take up any leaks before they get by the secondary seal.

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