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Internet #100168770

Model #33402

Store SKU #238707

Gripper 3 in. Plastic Mechanical Test Plug

  • Seals or holds pressure while testing a piping system
  • Plastic body protects against rusting and corroding
  • Wing nut makes tightening and removing easy
  • See More Details

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Product Overview

The Oatey 3 in. Plastic Mechanical Test Plug helps seal piping or holds pressure while testing a piping system. The plastic body has minimal to no rusting or corroding for a long-lasting use. The plug's wing nut helps make tightening and removing the plug easy.
  • Plastic plug body has minimal rusting or corroding
  • Use to seal piping or to hold pressure while testing a piping system
  • Ideal to plug open-ended 3 in. pipes
  • Maximum air pressure is 5 PSIG
  • Wing nut makes for easy tightening and removal
  • Made in the USA

Info & Guides

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Specifications

Dimensions

Maximum Drain Diameter (in.)
3
Minimum Drain Diameter (in.)
3
Product Depth (in.)
3.5
Product Height (in.)
2.75
Product Width (in.)
3.5

Details

Application
Tub & Shower
Color Family
Red
Color/Finish
Black
Finish
Red
Material
Plastic
Pack Size
1
Plumbing Category
Sink
Plumbing Part Type
Plugs & Stoppers
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 year

Questions & Answers

58Questions11Answers

Will this work in a lawn roller?

Asked by Jeff April 13, 2021
1
Answer

This plug has a usage ranger of 1.48"–1.65". It is not designed to be rolled over repeatedly.

Can I use this in a gas tank for boat? Curious if the gas will destroy the rubber

Asked by Wyatt April 2, 2021
1
Answer

This cannot be used. Oatey part #273328 can be used with this gas.

Can I use this to permanently replace the 4 inch lead and steel caps on my 4 inch cast iron main ...

Asked by Joseph March 23, 2021
1
Answer

3.8"–4.06" is the usage range and these will work if the ID falls within that range.

Can this be used to plug an old metal basement floor drain cleanout opening that used to have a ...

Asked by bargainguy March 22, 2021
1
Answer

Yes.

Can I use this to replace the lead caps on my cast iron sewer trap?

Asked by Joseph March 20, 2021
2
Answers

The description says it all - this is a "test cap" which allows you to check for leaks before you seal it up for good. So - as far as your question - are you looking short-term or semi-permanent? (Hardly anything is truly "permanent".) This product is intended to be short-term.

will this plug fit on the female end of a 90 or will i need a 2 inch

Asked by tracy November 18, 2020
1
Answer

The usage range is 1.48" to 1.65". The 2" Gripper usage range is 1.9" to 2.17".

Will this also plug the drain weep holes to test a new Hot Mop installation?

Asked by TonyD September 30, 2020
1
Answer

No - you would need a 2" Pneumatic Test-Ball #270024.

What is the maximum expanded diameter?

Asked by Khorosho September 28, 2020
1
Answer

3.8" - 4.06"

Will this expand to fit 1 3/4" bathtub drain?

Asked by Jj September 13, 2020
1
Answer

No this has a usage range of 1.48"–1.65".

Do I have to take the top off to put in toilet pipe hole

Asked by nece August 11, 2020
1
Answer

No. Leave the plug intact and just loosen before inserting into the pipe. Then tighten the nut to expand the rubber and create the seal.

Gripper 3 in. Plastic Mechanical Test Plug - page 2

Customer Reviews

  • 4.6
    out of 269 reviews
  • 91% recommend this product
Filter by:
Showing 1-10 of 269 reviews
No issues; seals well....
No issues; seals well.
by Tom
So I just received the Oatey 33402 test plug and it works perfectly to plug the toilet drain. It ...
So I just received the Oatey 33402 test plug and it works perfectly to plug the toilet drain. It is tight and I'm confident no sewer gas is escaping.
by Jerry
2 people found this helpful
My neighbor told us about these drain plugs while we have been battling the flooding of the St. C...
My neighbor told us about these drain plugs while we have been battling the flooding of the St. Clair River (spring and summer of 2019). We found 2 drains in our 90 year old home that drain into the St. Clair River (one in the garage floor and one in our laundry room floor). Both drains are no longer used, but when the St. Clair river levels began to climb, water was coming up through these drains and into our garage and laundry room. I purchased all the available sizes and brought them home and capped off both drains. These have been a godsent. They have held back the water from coming into the laundry room and bubbling up into the garage.
by ANNE
2 people found this helpful
I use these for mineral feeders. I generally use them as the top and bottom plugs. I've had some ...
I use these for mineral feeders. I generally use them as the top and bottom plugs. I've had some in use for over two years. The pic is of an older design, I no longer put the little piece of pipe in the bottom, I just push the plug farther up in. It works better that way, less built-up.
by OhioRural
For those doing bathroom remodels this test plug is a must. I originally purchased a simple plug ...
For those doing bathroom remodels this test plug is a must. I originally purchased a simple plug (looks like an over-sized milk cap) to do my shower 2 inch drain. This plug has a screw to compress a rubber gasket to ensure a good seal. To make sure your new installation holds water, you install this plug to seal the drain, fill the shower with water, mark the water height with a marker and leave overnight. If the level goes down, you can assume you have a leak you'll need to repair before going further with the tile install. I'm sure I'll get years of use from this product. It's true it doesn't come with instructions but there's plenty of YouTube videos on-line to view.
by greg968
1 person found this helpful
This Oatey 2” test plug is perfect for my vacuum pipe system! While the intended purpose is for p...
This Oatey 2” test plug is perfect for my vacuum pipe system! While the intended purpose is for pressure testing pvc systems, I will be using it as an easy on, easy off plug for my shop’s vacuum piping. Turn the butterfly screw and it compresses the rubber to tighten around the inside of the pipe; turn it counterclock to loosen it. Easy peasy. Oatey’s warning lettering on the plug is hilarious : “Caution: Stand clear while in use.” I suppose that’s to remind folks that it’s pressurized and not put your face too close to the plug, lol! Yup, no face next to the plug! In my case, the vacuum pipe might my eat my face, hehe! Nope, no face close to the pipe end here, no siree!
by BrooklynBumpkin
The Oatey 2 in. Mechanical Plastic Test Plug is designed for use to seal pipes or to hold pressure while you are testing them. While I may at some point use this test plug for the purpose it was intended I wanted it for something else. In my basement woodworking shop I have a dust collection system with multiple hoses and fittings to help keep my lungs safe. I have times when I need to easily and quickly temporarily plug a hose connector to stop air leakage which weakens the draw/suction of the dust collector to the other outlets. I have various sizes of these for such times and they work perfectly. Gone are the days of wandering the Home Depot isles looking for something just the right size to stuff in the end of a hose fitting, now I can just turn the wing nut until I get a tight fit.
by FBtool
1 person found this helpful
The staff said there was no product in store to seal a toilet drain when removing a toilet, howev...
The staff said there was no product in store to seal a toilet drain when removing a toilet, however when we did an Internet search this came up. I then found it on HD site and it was available in the very store we visited. Ended up ordering from a different location for pickup. It works great after all the back and forth to find it.
by midwestbuyer
4 people found this helpful
Initial viewing: Sioux chief The Gripper 4” Mechanical Test Plug is constructed using durable pl...
Initial viewing: Sioux chief The Gripper 4” Mechanical Test Plug is constructed using durable plastic wedge plates and a sturdy, pliable rubber sealing grommet. The threaded carriage bold and cast wing nut, are both cleanly threaded and operate smoothly. The top plate is 4 9/32” and will prevent it from falling into a 4” opening, while the bottom plate is 3 23/32” that easily fits in a 4” opening. Testing: I constructed a test pipe using 4” PVC piping, stepped down to ¾” steel nipple that I attached a 15 psi test gauge (see photo). I placed the test plug into the open end of the 4” pipe and then pumped in 15 pounds of air. The first test resulted in a fast decompression. I tested for leaks and found them around the plug. I tightened the plug to the maximum, using a set of vice grips and tested again. The second test resulted in a slow leak. I then made sure that the cut on the open end of the 4” PVC was exactly square and tested again. The integrity of the seal remained solid and it held 15 psi for 2 hours. Summary: I found this product to be made with excellent materials, the type that will result in a good long useful life span. Though the grommet is made of nice durable rubber, it is only 5/8” thick and needs to be exactly square against the walls of the pipe, to seal correctly. I would use this mostly for just temporally closing openings.
by NJDIY
2 people found this helpful
Works great for what it's designed for. As long as you have a clean, round opening, it will easil...
Works great for what it's designed for. As long as you have a clean, round opening, it will easily and securely seal a toilet drain or other open pipe.
by Hunter
3 people found this helpful
Showing 1-10 of 269 reviews