---
product_id: 345711940
title: "33403 Plastic Plug (with Galvanized screw and wing nut), 4-Inch"
brand: "oatey"
price: "349 kr"
currency: DKK
in_stock: true
reviews_count: 6
category: "Oatey"
url: https://www.desertcart.dk/products/345711940-33403-plastic-plug-with-galvanized-screw-and-wing-nut-4
store_origin: DK
region: Denmark
---

# 4-inch size fits standard pipes Durable plastic with galvanized screw & wing nut Holds up to 5 PSIG air pressure 33403 Plastic Plug (with Galvanized screw and wing nut), 4-Inch

**Brand:** oatey
**Price:** 349 kr
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it, secure it, forget it — the pro’s choice for pipe protection!

## Quick Answers

- **What is this?** 33403 Plastic Plug (with Galvanized screw and wing nut), 4-Inch by oatey
- **How much does it cost?** 349 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/345711940-33403-plastic-plug-with-galvanized-screw-and-wing-nut-4)

## Best For

- oatey enthusiasts

## Why This Product

- Trusted oatey brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Quality:** Backed by Oatey’s 1-year limited warranty and a 4.7-star rating from over 1,700 professionals.
- • **Secure Fastening:** Includes galvanized screw and wing nut for a tight, tool-free installation that stays put.
- • **Pressure-Ready Plug:** Engineered to withstand up to 5 PSIG air pressure, ensuring reliable sealing under demanding conditions.
- • **Dust & Debris Defense:** Effectively blocks dirt and debris from open pipe ends, maintaining system integrity.
- • **Universal Compatibility:** Designed to fit most piping materials with a versatile 4-inch size for broad application.

## Overview

The Oatey 33403 Plastic Plug is a 4-inch mechanical plug crafted from durable plastic with a galvanized screw and wing nut for secure fastening. Designed to hold higher pressures up to 5 PSIG, it effectively protects open pipe ends from dirt and debris. Trusted by professionals, it boasts a 4.7-star rating and a 1-year limited warranty, making it a reliable solution for plumbing maintenance and repair.

## Description

Oatey End-of-Pipe Gripper Plugs mechanically expand to seal the end of a pipe and hold pressure when testing a piping system. The extra large wing nut makes installation easy without tools. Oatey products have earned the trust of plumbing professionals for over 100 years.

Review: Slightly overpriced - Good product, but slightly overpriced
Review: Fantastic - Only hope is it lasts forever. If the wing nut design could have been changed to be flush with the floor, it would be an added advantage

## Features

- End-of-pipe plug seals or holds pressure to test piping system
- Plugs open-ended 4 in. pipes
- Made with ABS glass-reinforced plates for added strength
- Mechanically seals only at the end of a pipe, preventing plug from falling into stack
- Rated for 17 PSI or 40 ft. of head pressure
- Can be used in long-term applications
- Plastic plug body will not rust or corrode
- Natural, chemical-resistant rubber O-ring for excellent expansion and memory
- Zinc-plated steel handle
- Galvanized carriage bolt to prevent corrosion

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000H5T1PI |
| Best Sellers Rank | #178,080 in Home Improvement ( See Top 100 in Home Improvement ) #240 in Plugs |
| Brand | Oatey |
| Colour | Red |
| Customer Reviews | 4.7 out of 5 stars 1,815 Reviews |
| Enclosure Material | Plastic |
| Global Trade Identification Number | 00038753334035 |
| Included Components | (1) Mechanical plug |
| Item Dimensions W x H | 9.5W x 9.5H Centimeters |
| Item Type Name | 4-in. End of Pipe Gripper Mechanical Plug with Galvanized Screw and Wing Nut |
| Item Weight | 0.5 Pounds |
| Manufacturer | Oatey |
| Manufacturer Part Number | 33403 |
| Manufacturer Warranty Description | 1-year limited |
| Material | Plastic |
| Model number | 33403 |
| Number of Items | 1 |
| Product Dimensions | 9.5W x 9.5H Centimeters |
| UPC | 038753334035 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Oatey
- **Colour:** Galvanized
- **Item Weight:** 0.5 Pounds
- **Material:** Plastic
- **Product Dimensions:** 9.5W x 9.5H Centimeters

## Images

![33403 Plastic Plug (with Galvanized screw and wing nut), 4-Inch - Image 1](https://m.media-amazon.com/images/I/61n+a7FAwRL.jpg)
![33403 Plastic Plug (with Galvanized screw and wing nut), 4-Inch - Image 2](https://m.media-amazon.com/images/I/81FwDIsRb5L.jpg)
![33403 Plastic Plug (with Galvanized screw and wing nut), 4-Inch - Image 3](https://m.media-amazon.com/images/I/717EZzqgBcL.jpg)

## Questions & Answers

**Q: What size is the bolt and how long is it?  Thanks.**
A: I measured the bolt at 3/8" threaded diameter with 2 1/4" of threaded length. Since this is not specified in the description and other bolt lengths would work the same, it may be you'd end up with a different bolt length.

**Q: Would this stand up to the abuse of an ATV, as a dry storage tube cap?**
A: I would think so. It’s pretty sturdy

**Q: Will this seal the 31/4" cleanout hole in 4" cast iron sewer line?**
A: This plug properly fits a 4" hole. Mine is in use so I cannot measure it. However, I also purchased the 3" plug and I believe it would be more appropriate. At max, it achieves about 3 1/8 seal. If you wrap enough material around the 3" you might get a more usable product.

**Q: End of RV slinky storage tube is 4.5 " diameter.  When rubber is compressed will this be tight enough to survive vibration of normal travel?**
A: It's meant to hold fast in a firm pipe, like PVC.  I wouldn't recommend it for a hose or pipe with give. The rubber gasket only moves out a little bit when tightened. Maybe you could get a large hose clamp and tighten it down outside your hose after you cover the end with aluminum foil.

## Customer Reviews

### ⭐⭐⭐⭐ Slightly overpriced
*by H***. on 19 June 2025*

Good product, but slightly overpriced

### ⭐⭐⭐⭐⭐ Fantastic
*by N***O on 13 October 2024*

Only hope is it lasts forever. If the wing nut design could have been changed to be flush with the floor, it would be an added advantage

### ⭐⭐⭐⭐⭐ Perfect fit
*by J***S on 20 March 2021*

Bought this to seal off a toilet flange that we are no longer needing. This toilet flange was too hard to remove and at some point we may want to reinstall the toilet. The 4 inch sized one works perfect. A nice tight seal.

## Frequently Bought Together

- Oatey 33403 4-in. End of Pipe Gripper Mechanical Plug with Galvanized Screw and Wing Nut, 4 Inch, Red
- Oatey 33402 Mechanical Test Plug, 3 in, 5 Psi Back, Plastic, 110 Deg F, 3 Inch, Red
- Oatey 33400 Mechanical End-of-Pipe Gripper Plug, 1-1/2 in., Red, 1 Count

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-05-26*