- #1
Jynx18
- 13
- 0
I am looking for some info. I have two hollow tubes that need to slide into each other and have the inside one not fall out due to friction from the oring INSIDE the larger one. It is not doing any sealing, the oring is just to cause friction. The inside tube will be moved to remove and replace it but it is not a constantly moving part. The tube diameters and oring size are set. I just need to size the groove for the oring to sit in.
Oring
Size: 018
ID: 0.739"
OD: 0.879"
Cross section: 0.07"
Tube 1:
0.75" ID
Tube 2:
0.74" OD
Tube 2 goes inside Tube 1.
From the parker handbook it looks like the oring groove should be slightly wider than the oring. Also to keep some friction the OD of the groove should be slightly smaller than the OD of the oring.
Here is what I am thinking from the handbook:
It says Gland Depth sould be 0.050" to 0.052".
So 0.75" + 0.050" + 0.050" = 0.85" to 0.854"
Groove Diameter: 0.85" to 0.854"
And right from the handbook:
Groove Width: 0.093" to 0.098" (sounds a little wide to me though)
Any input on design of this would be great. Thanks
Oring
Size: 018
ID: 0.739"
OD: 0.879"
Cross section: 0.07"
Tube 1:
0.75" ID
Tube 2:
0.74" OD
Tube 2 goes inside Tube 1.
From the parker handbook it looks like the oring groove should be slightly wider than the oring. Also to keep some friction the OD of the groove should be slightly smaller than the OD of the oring.
Here is what I am thinking from the handbook:
It says Gland Depth sould be 0.050" to 0.052".
So 0.75" + 0.050" + 0.050" = 0.85" to 0.854"
Groove Diameter: 0.85" to 0.854"
And right from the handbook:
Groove Width: 0.093" to 0.098" (sounds a little wide to me though)
Any input on design of this would be great. Thanks