Emergency O ring adhesive

Karl,

The o-ring kits I've used simply came with/used a tube of superglue....

Dave Young

Karl Townsend wrote:

Karl

I have an O-ring repair kit and t uses crazy glue.

Bob AZ

Perhaps Loctite 404 adhesive. That's what is in my o-ring making kit.

Shawn

This is what I'll use 'cause I have some on hand. Thanks. Apple Petal Fall spray at 0400, before wind kicks up.

Karl

Superglue worx.

Nick

Like others have said super glue works the trick is to use a razor blade to carefully square the ends. Trickier to do that it first appears.

Slice the o ring on the diagonal rather than straight across, scarf joint. I've seen pump mfgr's around here doing that for years and some of their pumps run a little more than low pressure.

John

Mine was a square cut, don't thing i could do two identical diagonals without some kind of fixture. Is one made? I can see this way would be stronger.

Karl

Well, the "straight-across" fixture I used to use was simply a well-fitting hole in a plastic block - cut the o-ring off with a razor blade - and that was a commercial kit. An angled hole would be all you'd need different (though the other problem would come with not sliding the faces while gluing - for the straight across cut, a V cut the top of the same plastic block served to line them up, and finger pressure to clamp them together.

Cyanoacrylates work fine, but make sure your cuts are perfectly square and smooth. Then be sure to breathe on one end (to add some water to the joint) just before touching the ends together.

There is a better CA out there for o-rings. Tower Hobbies sells it, as does Hobbytown. It's a co-polymer of neoprene rubber and CA, and black, too. It cures flexible but just as fast and strong as other CAs.

LLoyd

I glued a 1/4" O ring on a pig launcher door with Super Glue and we Hydrostated the thing to 3,000 PSI. Bruce in Bangkok (brucepaigeatgmaildotcom)

If you wrap the cording around and cut both ends at a diagonal at same time they should have same angles on them. Never done it but will try the next time. I've always square edged them.

Scarfs are far stronger, at least in wood.

Wes

diagonals

but then you need rotational as well as linear alignment. A straight cut, and pop the two ends into a Vee shaped channel works just fine when I do it. Main problem is putting a small enough blob of CA on not to form a band as it oozes out.

AWEM

Make yourself an alignment block from teflon with a long V groove. If some glue oozes out it doesn't stick. Randy

straight

But it doesn't then seal! The object of not having the ooze is to get a good seal in the end application.

AWEM

You can sand off the glue and make a smooth surface.

John

I seem to remember using the diving suit cement for things like this. It was the stuff sold for wet suits.

Steve R.

Comes in CV joint boot repair kits for cars. If you ever to a CV joint boot repair this way, keep the unused glue (they always supply too much).

Mark Rand RTFM

I wonder if the stuff for neoprene waders would work as well?

Wes