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Flexibox, I agree. I have come to the conclusion that o-rings might not be the best solution for this problem. I am now looking at: - Kantseals (from Trelleborg): square cross section rings, as in your sketch - Quad rings (aka X-rings) - Fluid connector seals, DIN 3869 - Bonded seals (aka USIT...

That should be: "The flange edge does not have a chamfer"

Flexibox, That could be an option. But what I did not mention in my first post (to not unnecessary complicate my explanation) is that there are actually two different types of products (metal tubes). One with a wide flange and one with a narrow flange. As shown here: http://tinyurl.com/33oxucm...

Hi all, I have a seal design question. I am designing a measuring device. This device will be used to test a series of products. The products are closed metal tubes with a flange. (see links for screenshots) http://tinyurl.com/3a5xgvt http://tinyurl.com/32ytyus http://tinyurl.com/3a2fkmm These...

@Ibrahim, That is a good remark. According to o-ring suppliers specifications, surface roughness for grooves should range from 0.8 to 1.6 um Ra (micrometer Ra). That can be achieved with milling.

@Mike, I milled a groove in a little test part where the o-ring was compressed against the outer circumference. It seemed to stay fairly well in place. Tapering the groove wall will ofcourse help a lot. But it will also increase production cost. The actual setup will have 80 of these o-ring...

Thanks everyone, for your contributions! The compression % is definitely something I need to give some attention to. Especially because the seal is often opened and closed. If compression is too high, there might be some compression set which is not good if you need to open and close all the...

@cOrdObes, "Height of the groove approx 2/3rds of the O ring O.D." --- I assume you mean 2/3 of the o-ring cross section diameter? @CorBlimeyLimey (whatever happened to simple usernames like Joe or José ..? ;-)) "Cross-sectional area of groove 5%< or = cross-sectional area of O-ring" --- So...

Hi, I am designing a static seal with an o-ring. The particularity is that the groove is non-circular. It has an oval-like shape (see picture in link below). I am wondering how to calculate groove dimensions. The medium is compressed air of 10 bar. Pressure is on the inside, so the o-ring is...

Ben, [thumbsup] "Wildfires are dangerous, ..." Do you mind if I borrow that quote sometimes, should the ocasion arise ? B-) Eddy

PS. I just noticed that the title of this thread is wrong. It should be: "Opening drw file when part already open" instead of: "Opening Prt file when drawing already open" :-D Kind regards Eddy

Michael, I was thinking something simular, however I am probably going to use AutoIt ( http://www.autoitscript.com/autoit3/ ) to write a script. I have a little experience with it and I feel it is more powerful than mapkey. Grabbing the part file name could perhaps be done by doing a 'Rename'...

Guys, Thanks a lot for your replies! David. Yes, the "File open" window does not really behave like in any other standard Windows application. For example, in any other Windows application "File open" box, selecting any file, and then entering a character makes the selection jump to the first...

Hi all, I usually give my drawings the same name as my parts. For example: MyPart.prt and MyPart.drw If you have MyPart.drw open, and you do "File / Open", the file selection dialog box appears and it automatically preselects the file "MyPart.prt". So, all I have to do is press OK and file...