Rolock 90 scratched ring

[VladimirG]

Hi

I got a second hand Rolock 90 set. The seller claimed it was not used at all and indeed it doesn't show any wear externally. They came with blue Showa gloves mounted, maybe by the seller.

However I noticed a small leak in the right glove. When I removed the glove I saw some scratches on the inside of the glove ring in the area where the blue ring presses the glove to seal. I suspect that those scratches cause the leak, even if they are small.

Does anyone have an idea what they can be caused by? E.g. some small sand particles that ended there during mounting...

And also, would it be possible to polish the plastic with some solvent like acetone to make it smooth again? I know this is used occasionally with 3d printed parts.

That part is sold separately too, but there aren't many shops offering it.

Thanks.

 

[Badger7]

Wait, you're not talking about the sealing surface between the glove wring and suit ring, that scratch is on the channel that the glove sits in pressed in place with the blue rings correct?

May not be as tough to diagnose as you're thinking. If the glove / glove ring are leaking, the leak will be on your hand, not your sleeve. If the glove ring / wrist ring are leaking, same. If the wrist seal / PU ring are leaking, the leak will be on your sleeve on the other side of the wrist seal. Can you confirm the leak is on your hand and not your sleeve? If so, the issue is either water passing between the glove and the glove ring as you suspect, or between the oring pressed between the glove and wrist ring.

In both cases, a liberal application of a sticky silicone-based lube would tend to (temporarily) alleviate the issue as it would fill any gaps or imperfections.

If that scratch is where I'm thinking it is, probably due to using a metal tool to remove a glove from the glove ring rather than just pulling it out slowly. I use a smear of superlube silicone gel when fixing gloves into rolock glove rings to form a better seal and to make removal possible without tools.

Personally, I'd start with something soft and smooth like a guitar pick to knock down any high points on that scratch, and then put a nice filet of silicone gel lubricant on the channel the glove face gets retained into, reseat the blue ring and retest. If it seals well, then you at least know where the issue lies.

Also, verify that the blue rings that go inside the gloves have their orings on them, that is what forms the pressure inside the gloves to make the gloves seal to the ring. If you were missing the thin o ring from the blue ring, I would totally expect a slow glove leak.