Turning an O-ring groove in piston
"Pete C." wrote in message
ster.com...
Bob La Londe wrote:
"Pete C." wrote in message
ster.com...
Bob La Londe wrote:
"Bob La Londe" wrote in message
...
So what's the
spproscribedsp
prescribed method? I expect I need a pretty consistent radius
bottom. What's the best way. Make a rough semi V lathe bit, and
then
make a decent round one to finish?
LOL.
Silicone o-ring for modest heat. Upto about 325 degrees.
Most O-rings I look at are seated in square grooves. I believe you need
the extra space afforded by the square groove to allow the O-ring to
deform and seal properly. For a piston though, you should probably be
looking at cup seals and the like on McMaster.com.
Not an engine piston. A modest temp single stroke hand injection pump
piston. After I posted I was thinking a square groove might work better.
Thanks. I have not grooved the piston itself yet.
Not engine piston, they use very different seals, think hydraulic piston
as most of those use some variety of cup seal.
Ok... if I ever go to high production (if I do remind me I'm a hack) I'll
look at that. Most of the "commercial" models of this are using an o-ring.
|