O'ring face seal using Al material
O'ring face seal using Al material
(OP)
Any good tips on making o'ring face seals better. I need the following: metal to oring interface with high sealing quality. Cannot be tounge and groove but does incorproate a dovetail to caputure the oring. Any suggestions or ref. websites appreciated.





RE: O'ring face seal using Al material
1. keep all corners from being sharp, especially in the dovetail. The o-ring will roll like a torus under high pressure and peel just like a log in a plywood factory.
2. allow for expansion of the joint, and some extrusion of the rubber between sealing surfaces. (avoid thin wall sections on the low pressure side, as they will cut when the joint settles)
3. watch for chatter in the machined surfaces
4. Don't try too much overcompression of the ring, because you just end up with pinching during assembly. Let the seal do its job as recommended by the mfg.
5. Not necessarily least important, make sure the seal material is compatible with the local outside environment, not just the contained material.
6. Don't get too cheap on the cross-section size. Robustness comes after the seal starts to wear, not when new.
7. Watch your temperature recommendations. Feynman wasn't joking that time.
RE: O'ring face seal using Al material
http://www.efunda.com/designstandards/oring/calc_oring_radial.cfm/
Keep the wheels down...
RE: O'ring face seal using Al material