Uniseal 4'' x SDR35 - U400-35

Forget name of guy I spoke with but I called in to explain type of pipe I had and he knew right away what size it was and seal size needed I bought the appropriate size saw from harbor freight much cheaper than HD cut the holes popped in the seals. They seemed a little loose but when I pushed in the pipe everything was all snug and tight. Highly delighted with the product

Core drilled into underground cistern, siliconed this ring to seal the 4 water collection pvc pipe.

Installed four 4 SDR 35. Filed the leading edge to a taper, used dish soap and a little water. Effortless installation. It took longer to file the edge than to push the pipe in. Follow the instructions provided. I am not sure why others have issues. If I have the need, I will definitely used them again. Worth every penny.

These are nearly impossible to insert a SDR35 schedule pipe into. It took 2 men, soap and a lot of grunt to get it in.

They work great on flatter surfaces, but going thru anything with much of a curve to it, like a blue water barrel, seems to have very minor leakage. Same problem on 5 different holes. Had to apply liquid rubber to finish off the seal.

The QC is great, nice looking, tight fit, tough as nails, great design, easy to install, stop shopping and buy this, the price is right, you will be happy.

Perfect for my radon system using 4 PVC DVW pipe

Installed two on two 4500 gal fiberglass fish tanks 2 weeks ago (with fish already in the tanks) to create an overflow. So far so good, no leaks. Installs easy if pipe is excessively well lubricated. I used vegetable oil. If need to back out the pipe some, the pipe + seal on the inside need to be profusely lubricated. Allows you to angle the pipe to a significant degree as needed. Got lucky that the wall thickness was less than 1/2. IMHO the biggest potential drawback is that all (?) uniseals can only accommodate a wall thickness of less than 1/2. $5 Uniseal beats $70 bulkhead so far, albeit one can rig their own bulkhead much cheaper too with a mail and female threaded adapters and a rubber gasket.

Your Uniseals work like a charm. The industry needs to know more about it.

they worked great for the overflow pipe on my rain barrels. the information provided for the install of the pipe thru the seal was very helpful.