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Your cart is empty.Uniseal is simply the world's best seal and installing the Uniseal is a simple process. After cutting a hole in the wall of a tank or other surface, the seal is inserted. Then the pipe is coated with a slippery detergent (i.e. dish soap) and pushed into the seal. Uniseal products replace traditional plumbing hardware with a single injection molded unit requiring no component parts. It was designed to solve many of the issues of pipe to tank connections. For many industries pipe to tank seals are traditionally among the most complex connections to manufacture. Traditional seals require multiple parts such as, rigid flanges, bolts, washers, o-rings, along with long assembly times and high production costs. The Du Pont Alcryn is the key to the liquid-tight seal. When the pipe is pushed through the rubber-like Uniseal from the outside, the inside Alcryn wall becomes thin enough to allow the pipe to squeeze through and then forms a liquid-tight seal. The coefficient of friction with the plastic pipe is roughly three times higher than any other material which allows it to create a better seal than with any other material. In static conditions the seal is good up to 65 PSI. Uniseal can withstand pressure, and suction, acids, oils, greases, gasoline, sewage, waste, heat and cold. It offers long life, easy installation and reduced labor and material costs.
Randy L.
Reviewed in the United States on March 27, 2025
No issues. They work as advertised. My first experience with them. All about the prep work. Clean smooth hole and youre good.
LARRY MARCUM
Reviewed in the United States on December 10, 2023
If foam core and schedule 40 were different size od you would have to buy different fittings. IVE BEEN A PLUMBER FOR 36 YEARS. EVEN THIN WALL PIPE HAS THE SAME OD. The od of foam core and schedule 40 pressure are EXACTLY THE SAME. Folks these things work perfectly but yes it’s a bitch to get them inserted but that’s why they don’t leak. Put grease or soap on them and use a lever to force it into place. YOU MUST CHAMFER THE PIPE on the end to get it through!!! To the guy that said schedule 40 and foam are different sizes…….NOPE
Ron
Reviewed in the United States on June 2, 2021
Purchased 3" pipe grommet. Instructions said to cut a 4" hole (using hole saw), but did not seem very tight in hole.
Matthew Garcia
Reviewed in the United States on June 6, 2020
Worked well, pleased to pay for a fine USA manufactured item.
landen
Reviewed in the United States on January 3, 2020
If these were engineered slightly better it would be a great product. I don't understand how the manufacturer can be so incompetent and so clueless about their own product. This 3 inch uniseal is designed to work with a 3-inch PVC pipe. But not schedule 40 PVC which is the standard it's designed to work with the foam core. The foam core is way smaller diameter than the standard schedule 40 PVC. Unfortunately the 4 inch hole that they instruct for you to drill for these is slightly too big to accommodate the foam core PVC. The schedule 40 PVC is so much bigger that it will form a tight fit as long as you are trying to shove the pipe into something that can deform its shape. Mainly thin plastic. The fitting will be so tight you will not be able to get it back apart without destroying whatever you had it inserted into. If the manufacturer had designed these with a slightly larger diameter it would be a near-perfect products. But most of their uniseals have bad information supplied with them and they are not capable of being used as advertised. For instance a one and 1/2 inch uniseal will not fit a 1 and 1/2 inch pipe like they say it is actually for 1 and 1/4 inch pipe.
Dominique Smith
Reviewed in the United States on January 12, 2020
Works as intended!
Jose
Reviewed in the United States on April 30, 2020
Great products & A1 service!!! Thank you!!
Rodney
Reviewed in the United States on October 27, 2017
The 3" Uniseal adapter work great. Use some soapy water to insert and the seal great.
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