O-ring sizing

Quote:

Originally Posted by Killer

Because the groove diameter was given at 24mm and the size stated was 25mm. Should have been 24mm. The width of the groove also should have clearence on the o-ring to allow the o-ring to deform diameter wise.
Hope this helps.

Cheers, Mick

Spot on Mick!

O'rings are the most misunderstood sealing device.

Simplistic in design, if not correctly fitted they will wear quickly, extrude, roll or tear.

Even static designs such as flanges require very accurate tapered housing dimensions to fit correctly.

Cheers
Tombraider