Im sure that Red Rubber grease together with the rubber seal and some other’s will prevent the water coming in.
The number of place’s it’s used on car’s in far more extreme conditions! There’s water, salt, cold, heat, dirt and other things to contend with, in locations like the car suspension, steering rack, driveshafts etc.
In all of these places rubber boot’s are used to seal and to prevent the ingres of water and dirt which would cause havoc with expensive bearings and splines, various greases are used depending on the application.
I couldn’t find the switch on Simon’s Convoy shop the other day, I don’t mind purchasing one and trying it out, I have plenty of grease.
The testing of the light would have to follow real life conditions if possible but accelerated to save time, in water and out, in water and out, back in the house where it’s warm, in the fridge, back outside, switched on for a while. Back home, in the water again, hydrostatic tests - varying the depth of water to arm’s length or so.
In reality it may not be subjected to such extreme conditions but most product testing is done to failure which will give the parameters for normal every day use.
When you’re designing a crane etc its called the factor of safety, max capacity before failure( ultimate tensile strength) / working stress = factor of safety.
Factors of safety ( low) industrial engineers, high ( high) member’s of the public.
●●●●The above is straightforward, testing a flashlight seal is very simple indeed. ●●●
Put it through a cycle but accelerate this over a shorter period, know one would want to wait a year or two for the result. Nearly all product testing is accomplished like this.
More than one switch or just the rubber boot would be needed just in case it does fail so the test can be continued.
Someone else can do it or I don’t mind, in reality it’s all very very simple!
Cheers!
