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Need good adhesive for bonding rubber cuff back on riflescope

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3.5K views 17 replies 12 participants last post by  passport  
#1 ·
I have a Zeiss Conquest that is probably going on 10 years old. There is a circular rubber cuff that goes around the outer rim of the eye piece. It recently fell off. It can slide back on, but it can then easily come back off without having been bonded somehow. I contacted Zeiss about this, and they said you can use any adhesive, making sure not to get it on the glass of course, or two sided tape. The two sided tape idea sounded silly, since the cuff fixes on the scope rather snug I assume that would push the tape off when the cuff is slid on over the tape, so I want to go with some form of adhesive.

Does anybody have any recommendations as to a good adhesive to use on a rifle scope to bond a rubber material to metal?

Thanks in advance!
 
#3 ·
Install the rubber on the scope; wrap masking tape on the eyepiece where it ends.
Remove the cuff and squeeze a small bead of clear silicon caulk around the eyepiece. [Buy a toothpaste size squeeze tube at Home Depot or auto parts store; snip the nozzle for a ~1mm diameter bead.]
Slide the cuff on; wipe off any excess with your finger, remove tape and leave to cure.

Pliobond works great but best if both surfaces are coated. Whatever adhesive you use apply it ONLY to the metal and none on the rubber before you assemble it; else you will get a mess inside the body of the eyepiece.
 
#4 ·
Thanks for the help. I have stuff that's just like pliobond, and I also have silicon RTV. I tried both last night and neither seemed to work. They stayed tacky and would not hold. But my garage was pretty cold, around 45 degrees, keeping the metal cold, so I'm going to try again indoors. I may have to order a tube of pliobond.

Zeiss recommended double sided tape, which I thought was silly, but if I can find some really tough stuff I might give that a try....
 
#7 ·
I'm sure I could send it back to them and they'd fix it, but for something like this I'm not sure I want to bother with shipping and all that. Might end up doing it though if all the crap I keep using keeps failing.
 
#12 ·
#14 ·
It's from the "Wished I'd thought of that" department...
Same principal as the stuff dentists use for chip repair on teeth....

It's amazing compared to super glue...no mess or holding it for 10 minutes. And the container doesn't dry out after the 1st use.
Invisible on a ceramic trivet for heavy pots and so far it's holding on a crack in a snow shovel blade at the handle.
I haven't had the need to glue my boat together but it worked on TV, LOL.
Yeah, well the main thing I wondered when watching the infomertial was whether it really works like that haha.