×
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

Meaning of Register fit for Mechanical Seals

Meaning of Register fit for Mechanical Seals

Meaning of Register fit for Mechanical Seals

(OP)
Hello , Could any one explain me the term " Register fit", especially in the context of Mechanical seals.

RE: Meaning of Register fit for Mechanical Seals

I assume it refers to gland concentricity with the shaft. But you know what they say about assumptions.

RE: Meaning of Register fit for Mechanical Seals

(OP)
Thank you ClicketyClack, So the word "Register " is what !!? so we "register" it somewhere?!! ...sorry for ignorant question ....

RE: Meaning of Register fit for Mechanical Seals

Yes, the seal will have a small male step on the mounting face with a tight tolerance on the OD of that step: -----________------

It will mount to the pump or seal chamber which has a slightly larger ID:..................................................... ------|,,,,,,,,,,,,,,,,,|--------

To locate the seal as close to the pump/shaft centerline as required.


The register is where the o-ring is for a corner seal, or just inside of the o-ring if it is a face seal.

RE: Meaning of Register fit for Mechanical Seals

(OP)
Gibson, Thanks a lot, but I did not follow. Can you comment on the sketch enclosed?

RE: Meaning of Register fit for Mechanical Seals

So take a disposable coffee cup. The lid has a tight fit to the rim of the cup on that diameter (a little bit of an interference fit, but ignore that for now.)

The lid is the female component (interface on its ID) and the cup is the male component (interface on its OD.)

Lid is analogous to the seal chamber, rim of the cup is analogous that short step on the bottom of the mechanical seal.

RE: Meaning of Register fit for Mechanical Seals

(OP)
Gibson, Understood. Thanks a lot for giving a good example.

RE: Meaning of Register fit for Mechanical Seals

For the gland plate you can apply e8 H8 tolerance to achieve a spigot fit (registered fit)

Check this and you will see the numbers.

E8H8 is found in a limits and fits book!


Good luck.

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