0038753334028

Oatey

Model 33402

Internet #100168770

Store SKU #238707

3 in. Gripper Plastic Mechanical Test Plug

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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

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Customer Questions & Answers

3 Questions3 Answers

Customer Questions & Answers

3 in. Gripper Plastic Mechanical Test Plug
3 in. Gripper Plastic Mechanical Test Plug

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1 answer

Recommended lubricant

This question is from 3 in. Gripper Plastic Mechanical Test Plug
Asked by
Miami, FL
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October 2, 2015
One of the plugs I bought may need a little more lubricant between the plastic plates and center rubber donut. What type of lube do you recommend? I have plumber's putty, lithium grease (my preferred choice), auto disc brake lube...will any of these safely work?
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March 3, 2016
Answer: 
• Silicone grease is safe and compatible with natural rubber and it will help keep it soft - this is recommended.
• Any grease with mineral oil base will degrade the natural rubber
• "White lithium grease" is a general term - unless you know its composition for sure, I would advise keeping it away from natural rubber.
• Plumbers Putty is not a lubricant or water proof product. Definitely not
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• Silicone grease is safe and compatible with natural rubber and it will help keep it soft - this is recommended.
• Any grease with mineral oil base will degrade the natural rubber
• "White lithium grease" is a general term - unless you know its composition for sure, I would advise keeping it away from natural rubber.
• Plumbers Putty is not a lubricant or water proof product. Definitely not recommended.
• Whatever your preferred product will be, please make sure it is compatible with natural rubber
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Would this be safe to use to temporarily plug the pipe beneath a toilet after removing it?

This question is from 3 in. Gripper Plastic Mechanical Test Plug
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September 12, 2015
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Asked by
Rego Park, NY
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Home Improvement Profile: DIYer
September 15, 2015
Answer: 
While many contractors use a simple balled-up clothe to temporarily cover up vent and sewer lines this test plug can also be used for the same purpose. Just remember the goal is to prevent sewer gas from venting into the house so torqueing down isn't really necessary and even counter-productive
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What is the minimun Dia for this plug

This question is from 3 in. Gripper Plastic Mechanical Test Plug
Asked by
Toledo, OH
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August 6, 2015
I have a 3&1/4" opening to plug
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July 9, 2016
Answer: 
They don't call it 3inch for nothing...that's the minimum. Now max diameter could be larger as tightened but it's highly unlikely your pipe is 3.25" in dia.
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Customer Reviews

Rated 4.7 out of 5 by 3 reviewers.
Rated 5.0 out of 5.0 by Plain and simple it works, it works well, and it works and operates easily. December 9, 2015
Rated 5.0 out of 5.0 by Works fine with 3" (actual) PVC. . I found this plug fits a PVC drain pipe with an actual (as opposed to "nominal") inside diameter of about 3". The plug seals fine against both liquid and air. It comes from the factory with some white grease on the rubber ring, but I used plumber's grease to re-grease the rubber ring, the tapered plastic surfaces that expand the rubber ring, and the bolt and wing nut. With everything lubed this way finger tight is all that's needed to make a seal. BUT don't lube the outside of the plastic ring. PVC pipe is already slippery inside, and I had to remove the lube I first put on the outside of the plastic ring. The first reviewer is right, a stainless steel bolt and wing nut would be better, but then the plug would cost more. For temporary use the way it is works fine, for long-time use a stainless bolt, washers, and nut would of course be better. . September 12, 2014
Rated 4.0 out of 5.0 by Can be shaved to fit 2-1/2" basement cleanouts Been searching near and far for either a tapered lead 2-1/2" sewer cleanout or at exact fit 2-1/2" Oatey test plug to replace a rotted out cleanout plug. Typical of 50+ year-old Queens houses with a 2-1/2" sewer drain cleanout with rotted out C.I. threads the wife was concerned with not only sewer gases but as a entry-way for rodents and water bugs gaining access to house I about gave up trying to find something smaller than the 3-inch tapered lead cleanout plug which refused to fit not matter how I shaved/filed/customized the fit. As a last resort I used this 3-inch Oatey plug and spent the afternoon using a surform file to decrease the diameter of both the bottom plastic and corresponding rubber plug. All things considered this item will fit after shaving a bit of both the rubber plug and bottom red compression body. Only complaint is the wing nut and corresponding screw are cheaply plated and will eventually corrode with time. Queens, NY houses have predominantly 2-1/2" and 4' sewer cleanouts with horribly corroded threads making it a necessity for lead taper plugs as replacements. When new they fit remarkably well when coaxed with a mallet however they all deform when the same plug is removed for yearly sewer snaking. These Oatey plugs are more durable over the easily deformed tapered lead plugs. Only suggestion is to used stainless steel wing nuts and bolts. Suggestion is to have Oatey manufacture the same plug in 2-1/2" diameter August 18, 2013
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