I have these old brass Robinair R12 gauge set that I use for charging my A/C. They work perfectly fine except that the lenses which are 3 inches in diameter and screw on to the gauges (3-4 threads) have become very cloudy to the point that you cannot see through them.

I'm trying to get replacement lenses which you would think would be simple enough as they are just basic plastic 3" diameter screw on caps. However, when I called Robinair, they said that they no longer manufacture them.

The only ones that they seem to have is the 1/4 turn type (PN# 11796) which I do not think will work with my gauges.

I'm quite sure that this should be a standard fitting so I'm wondering if anyone here has run into the same problem.

I'd hate to throw away a set of gauges just because the lenses are damaged.

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With best regards

Al

This might sound funny, but why don't you get one of the cheap head light cleaning kits. My clk 320 headlights had turned yellow and cloudy and I bought one of those 3M kits and now my headlights are crystal clear. Just a thought my friend.

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Get a piece of polycarbonate (lexan) from Lowes/HD etc and cut your own. The store may be able to cut size circle you need.

Tried that already :-)

I may end up botching it for now but I won't be happy about it. Replacement gauges are not expensive so I may just spring for another set of gauges to mount of the manifold. It's frustrating when you have what you perceive as a quality brand name that no longer supports it's product.

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With best regards

Al