How To glue SCH 80 to Acrylic

[Boret]

I have a leak in a connection of a SCH80 pipe into an Acrylic lid.

 

 

Ozone ate away the glue!!!

 

I was wondering what can I use to seal it again.

 

Would PVC cement do the trick? Or do I need to get one of the Weld-Ons? I just need enough to cover seal a 1/2" pipe so it seems a waste order a whole can of Weld-On.

 

If Weld-On is the only why to go.... anyone close to Fairfax has some that I can use just to seal it?

 

Thanks!

[JMsAquarium]

I would say Wel-On 16 should do the trick. I have some you can borrow.

[Boret]

I spoke to Dan and he recommended to put a thick bead of PVC cement as the glue was already Weld-On but it seems is not that resistant to Ozone.

If it doesn't work I will take you up on the offer JM.

[davelin315]

I also have Weld-On 16. I am curious about how the PVC cement would work. It seems like the Weld-on does a better job with that type of seal, at least in the way that I have done it in the past. When I bead on the PVC I'm usually too impatient to wait for it to finish curing, but the Weld-On seems to cure quicker and is cleaner to apply.

[Boret]

The Weld-On cured OK and it was sealed but the Ozone ate it away. Maybe the PVC cement will be more resistant.

[dschflier]

I would suggest PVC cement as well. It pretty much melts the pieces together so it is differen't then a glue. I think it would work better

[davelin315]

I would suggest PVC cement as well. It pretty much melts the pieces together so it is differen't then a glue. I think it would work better

Isn't Weld-On a solvent as well? #4 is at the very least, don't know if #16 is, but I would guess that it is from how it reacts and how it functions.

 

That's interesting, overall, I wonder if it's actually the schedule 80 that is weak towards ozone. If these solvents dissolve the PVC and bond it together then they shouldn't be prone to ozone degradation unless the PVC is as well.

[Origami]

I've never done this, Boret, but go about halfway down this page: http://ozreef.org/diy_plans/techniques/gluing_acrylic.html

 

where they recommend Weldon-40.

 

Have you tried asking Jeff (Naga) for his advice on this? He seems to have a good handle on plastics and glue / solvents....

[dandy7200]

This joint was made with weldon #4052 which is the best there is for attaching pvc to acrylic. Is it ozone safe? Never thought about it before now. I have had many folks use my skimmers with ozone and never report a problem so I didn't see any issue here. The rest of the unit is put together with #4 and are all acrylic to acrylic bonds so it's not a catastrophe. As I told Boret in email earlier though, I am not convinced this is a "ozone" issue. Looks like it was jarred to cause it to pop up like that. Could have easily happened in the couple weeks between testing and delivery of the unit. Next time we'll just tap the lid and screw the union on though, just to be safe.

[Boret]

Thanks Dan. I put a liberal amount of PVC cement, still drying. I will give it 48 hrs to cure and test. You are right, tap and screw might be the way to go.

Every other seal its in great shape. I will update with pics once it cures.