Yes you guessed it, my flash to pass lenses are starting to fog. I was wondering if there was any way to re-seal them in order to prevent that. Or if replacement is the only option. Believe it or not I searched thoroughly. Anything comments would be appriciated

 

i bought a set at the junk yard and restored em..

Bake it in your oven for a few minutes to get it warm, your going to need ot take it apart..

get some adhesive sealent at a autostore.. clean the inside of the lense, and then reseal put it back together.

 

replacement is really the only way to go. It's an old *** plastic, and there's Very little you can do, to polish them up.

 

When theres no moisture inside they are practically new looking, really clear actually. Hypertek's idea seems to be what I already had in mind. Have yours leaked at all since you resealed them Hypertek ?

 

i found metal polish to be an *excellent* headlight plastic cleaner

 

Also, what about silicone instead of adhesive? If I screwed it up I would want to be able to get it back apart, or would I just have to heat up the adhesive resealant mentioned above?

 

Just silicone around the seam, no need to take them apart.

I would be doing this also, but one of them flew out on the freeway the other day.

 

Never imagined I would solve this issue in 37 minutes, at 2:25 AM. Thanks guys!!!

 

Wrong, only the outside of the plastic is affected. Polish the top layer off with metal polish and they'll look like new.

 

That is correct. The lenses are made out of polycarbonate. Polycarbonate turns yellow when exposed to ultraviolet light, part of the solar spectrum. Most modern polycarbonate lenses have an acrylic coating to protect them from the ultraviolet degradation. After you polish the lens, the acrylic is likely removed.

So...after you polish the lenses to a brand new look, clean them thoroughly with alcohol and spray them with a clear acrylic lacquer to keep them looking good.

 

I went a different route

Fog inside the lens is moisture thats been accumulating for some time.
So what i did was simply drill two small holes in the side of each lens, this allows the moisture to evapourate on a hot day and prevents further accumulation.

After doing this i never had foggy lens ever again. No sealing, and couldn't even see the holes once fitted back on the car.

Plus you guys seems to be talking about two types of fog, 1: where moisture is trapped in the lens, 2: where the lens plastic coating has gone cloudy.

 

I polished mine with normal car polish too:

before:


after:


works great