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1smokeyblue
how to get two pieces of abs to slide together
1smokeyblue

Trying to join two pieces of abs pipe together for a toilet flange. One, of course, being the flange. The pipe will not slide completely into the flange. Would wax create an issue with glue. Moisture? Any ideas. Thanks for your prompt reply.

A. Spruce
Re: how to get two pieces of abs to slide together
A. Spruce

The glue itself will become all the lubricant you need to slip the joint together.

If you're trying to get a measurement for the final height of the tail piece, the part you're gluing the flange to, you have to locate where the resting place of the flange bell will be and cut the tail piece accordingly. Leave yourself a little goof room, While you want as much mating penetration between your pieces as possible, an 1/8" to 1/4" shy isn't going to affect the integrity of the joint, thus giving you a margin of error on your measurements and cutting accuracy.

bill
Re: how to get two pieces of abs to slide together
bill

When you glue two pieces of ABS pipe together you must coat both with a good coating of glue and then very quickly push both together.You want the pipe to bottom out in the cup of the fitting I usually put one piece against something solid and the push the other piece in to it. If you screw up you have about 10 seconds to pull them apart before the glue sets. if it is only 1 1/2 not so bad but if three or more inches it is much harder to take apart.
Once the glue set sets super man could not pull the pieces apart.

Fencepost
Re: how to get two pieces of abs to slide together
Fencepost
bill shack wrote:

Once the glue set sets super man could not pull the pieces apart.

Semantics, but still...

It's not "glue", it's solvent cement. When you apply it, it actually dissolves the pipe and the fitting. After the pieces are mated and the solvent cement cures, the two pieces are welded together to become one solid piece of ABS. The cement contains some resin of the type of pipe you are welding. (The dissolving action makes it so the pipe slides into the fitting easily.)

You must use the right cement for the type of pipe you are connecting. ABS, PVC, and CPVC cement all have different solvents. The wrong type of cement will cause the joint to fail, because the solvents won't work on the incorrect type of pipe.

You can't join different types of pipe with solvent cement, either. There is no commonly available cement that works on polyethylene pipe. There are some glues marketed for joining different types of pipe, but they generally are not for pressure applications; they typically are used for certain drainage applications because they lack sufficient strength to withstand pressure. To join different types of pipe, you need to use a mechanical connection such as compression or threads, or a co-molded transition fitting that is made of both types of pipe.

(A glue is a substance that bonds to surfaces without chemically altering the surface it's bonding to. Glues are usually water-based. Cements are solvent based and will chemically alter the bonding surfaces creating a weld. Cements will have some "gluing" properties, such as when you get ABS cement on your fingers.)

dj1
Re: how to get two pieces of abs to slide together
dj1

I don't know if it was mentioned above, but you make sure all parts are clean and you don't prime them - just ABS glue/cement (it says so on the can and it's black in color). Make sure there's glue all over the joints, run the brush 2 or 3 times around.

When you join the pieces, hold them together for 15 seconds or so.

1smokeyblue
Re: how to get two pieces of abs to slide together
1smokeyblue

Thank you everyone for all the great advice. It worked perfect. The cement made it slide together like skates on ice. I am so glad to have this site for information.

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