





🔧 Seal it tight, test it right — the pro’s choice for leak-proof confidence!
The Oatey 33402 Mechanical Test Plug is a 3-inch, red plastic plug engineered for reliable pipe sealing during pressure testing. Featuring a corrosion-resistant ABS reinforced body and an oversized zinc wing nut for easy hand tightening, it withstands up to 5 PSI back pressure and temperatures up to 110°F. Designed to fit most pipe materials, this plug prevents leaks and ensures secure end-of-pipe sealing, making it a trusted tool for plumbing professionals and DIY managers alike.
| ASIN | B000H5WVQY |
| Best Sellers Rank | #133,261 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,050 in Industrial Pipe Fittings |
| Brand Name | Oatey |
| Color | Red |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,276) |
| Global Trade Identification Number | 00038753334028 |
| Included Components | Electrical & Heating;Cord & Power Management;electric-plugs |
| Item Dimensions W x H | 10.2W x 10.2H centimeters |
| Item Type Name | Mechanical Test Plug, 3 In, 5 Psi Back, Plastic, 110 Deg F |
| Manufacturer | Oatey |
| Manufacturer Part Number | 33402 |
| Material Type | Metal |
| Model Number | 33402 |
| Number of Items | 1 |
| UPC | 038753334028 |
| Unit Count | 1 Count |
J**.
I opened the cap of my basement cleanout to find that it was missing the plug that is supposed to be there to seal it. Instead, someone had stuffed a large amount of plastic sheeting down it instead - not a good solution. Popped this into the cleanout, turned the large oversized wing nut easily by hand to tighten down and now I feel way more confident that sewer gasses aren't going to be leaking out. It's a simple little thing, but it's made well and I expect it to last forever.
H**.
exelnte sercio y calidad del producto los tiempos de entrega fueron los estipulados
H**.
Nice product but slightly overpriced
H**S
Easy install, does it's job well.
A**R
My floor drain in my ground floor apt will never overflow again from a plugged sewer line.