On Sun, 7 Jun 2009 01:41:21 -0700, "iwdplz" wrote:

It was never opened, just old and water leaked in - the bulb was still good
before it got wet.

He's saying it will be opended by the time you replace the bulb, so
you should get a new seal rather than rely on grease. I'm sure that's
better, depending on how hard it is to find the right seal and how
much a third lightbulb woudl cost. For one thing, this seal is under
water pressure, which is alot more than if it were in the air but
subject to rain. A couple millimeters of rainwater sitting on a seal
is nowhere near the pressure of 1 foot, 2 feet of water, or however
deep your lights are.