IP67 Test, Moto 360 Sport, Consumer Reports
|GPS watch, water resistant to 50m|
- Gasket Stress Relaxation - this is when the gasket relaxes and stops pushing back, letting external pressures push past the gasket. Usually a result of improper gasket material selection for the specific application.
- Tolerance stack - if the variation in the sealing faces and gasket are not fully accounted for leaving minimal compression on the gasket
- Dispensing seam or flash - dispensed gaskets share a starting and ending point, it's possible to have a small "bump" or "divot" that may not have been accounted for in a tolerance analysis or closure force. Similarly, a molded gasket with flash can make a minute gap and allow ingress.
- Closure force vs. rigidity - often in an attempt to compress a gasket the housing flexes creating an ingress point
- O-ring roll - seen more often where an o-rings is installed into an non-matching gland, the gasket is worked into the gland and can be rolled or twisted
- Thermal cycling - the heating an cooling of the devices on/off mode creates internal pressures or vacuums that can "suck" in water.
For more information on IP67 gaskets, NEMA gasket, UL 50E gaskets or other custom enclosure gaskets and submerged gaskets, please contact Stockwell Elastomerics at 1-800-523-123 or via email to firstname.lastname@example.org.
posted by Steve Hughes at 1:23 PM