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Internet # 313787930

Model # 33403D-1

Store SKU # 1009473171

Gripper 4 in. Plastic Mechanical Test Plug (2-Pack)

Includes 2 units ($6.07 /unit)
$12.14
  • Seals or holds pressure while testing a piping system
  • Plastic body of plumber's plug protects against corrosion
  • Wing nut makes tightening and removing easy
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Return this item within 90 days of purchase. Read Return Policy

Product Details

About This Product

The Oatey 4 in. Plastic Gripper Mechanical Test Plug is intended for use to seal piping or to hold pressure while testing the piping system. This plug has a wing nut for easy tightening and removal. Its plastic body will not corrode or rust.

Highlights

  • Pack includes two mechanical test plugs
  • Plastic mechanical test plug has wing nut for easy tightening and removal
  • Use to plug open-ended 4 in. pipes
  • Plug mechanically seals inside pipe
  • Plastic plug body will not rust or corrode
  • Easy installation
  • Return Policy

Product Information

Internet # 313787930

Model # 33403D-1

Store SKU # 1009473171

Additional Resources

Shop All Oatey
From the Manufacturer

Specifications

Dimensions: H 2.75 in, W 4.25 in, D 4.25 in

Dimensions

Maximum Drain Diameter (in.)

4

Minimum Drain Diameter (in.)

4

Product Depth (in.)

4.25 in

Product Height (in.)

2.75 in

Product Width (in.)

4.25 in

Details

Application

Floor

Color Family

Red

Color/Finish

Red

Finish

Red

Material

Plastic

Pack Size

2

Plumbing Category

Sink

Plumbing Part Type

Plugs & Stoppers

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

1 year

Questions & Answers

21Questions
caret
Q:Will it work on dvw copper?
by|Apr 1, 2023
1 Answer
Answer This Question

A:  Yes it has a usage range of 3.8"–4.06" ID.

by|Apr 4, 2023
    caret
    Q:can this be used to seal off a toilet drain in the floor while working on the floor to keep the gasses from comming out
    by|Nov 3, 2022
    2 Answers
    Answer This Question

    A:  I don't see why not. I bought this for a cover for my main clean out because it was recommended by my plumber. Just make sure that the wider end is wider than your toilet flange so that there is no chance of it dropping in when tightening it down

    by|Jan 18, 2024
      2 found this answer helpful

      A:  Please contact us at technical@oatey.com or call 1-800-321-9532 and select the technical option for assistance and information on this product.

      by|May 17, 2024
        caret
        Q:If you are selling your home, will this actually pass a plumbing inspection? Seems like it's just meant to be temporary but this is a bit out of my wheelhouse.
        by|Sep 28, 2022
        2 Answers
        Answer This Question

        A:  I used it as a plug for the clean-out of the bathroom stack (the old one was actually a cork). A plumber put one just like it in the kitchen stack clean-out. They work. As far as what an inspector would say in the process of selling the house, I can't say.

        by|Oct 1, 2022

          A:  This is an approved plug but you will need to check with your local municipality to ensure it is approved in your area. These are typically used for testing or temporary plugging of pipe and not a permeant plug.

          by|Sep 29, 2022
            caret
            Q:Does this work on cast iron pipe?
            by|Aug 20, 2022
            1 Answer
            Answer This Question

            A:  Yes it does.

            by|Nov 2, 2023
              Showing 1-4 of 21

              Customer Reviews

              4.6 out of 5

              • 4.6 out of 341 reviews
              • 85% recommend this product
              Filter by:
              Showing 1-10 of 341 reviews
              Plug does not fit inside of slab closet flange.
              The Oatey Gripper 4 in. test plug was too large and did not fit inside of Genova #75144 4" Slab Closet Flange.
              by
              Response from OateySep 7, 2023
              This is an end of pipe test plug. It is not designed for use with closet flanges. Oatey
                Best test plug replacement...
                Best test plug replacement
                by
                • Verified Purchase
                No issues; seals well....
                No issues; seals well.
                by
                • Verified Purchase
                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
                • Verified Purchase
                • Recommended
                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
                • Verified Purchase
                • Recommended
                5 found this review 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
                2 found this review 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
                  • Recommended
                  3 found this review helpful
                  Well constructed and perfect fit
                  by
                  • Verified Purchase
                  by
                  • Verified Purchase
                  I tried just a 3 inch but it works fantastic
                  by
                  • Verified Purchase
                  Showing 1-10 of 341 reviews