---
product_id: 591268902
title: "Steel Drain Test Pipe Bung/Plug 4\" (100mm) Plumbing Stop Tube Blanking Cap"
brand: "ab tools"
price: "$70.93"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/591268902-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop
store_origin: US
region: United States of America
---

# Air & water test ready Steel alloy durability Centre locking mechanism Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap

**Brand:** ab tools
**Price:** $70.93
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it tight, test it right — the pro’s choice for flawless plumbing!

## Quick Answers

- **What is this?** Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap by ab tools
- **How much does it cost?** $70.93 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/591268902-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop)

## Best For

- ab tools enthusiasts

## Why This Product

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

## Key Features

- • **Wide Size Range:** Available from 1.5" to 18" to fit any pipe diameter with ease.
- • **Temporary Seal Mastery:** Ideal for quick pipe repairs and low-pressure testing without leaks.
- • **Precision Centre Locking:** Securely locks in place with brass wing nuts for hassle-free sealing.
- • **Unmatched Steel Strength:** Crafted from corrosion-resistant alloy steel for long-lasting reliability.
- • **Versatile Testing Compatibility:** Perfectly engineered for both air and water drain/sewer testing.

## Overview

The Steel Drain Test Pipe Bung/Plug 4" (100mm) by AB Tools is a corrosion-resistant, zinc-plated alloy steel plug designed for secure, temporary sealing of pipes during repair and low-pressure air or water testing. Featuring a centre locking mechanism with brass wing nuts, it ensures a reliable fit across a broad size range (1.5" to 18"), making it an essential tool for professional plumbers and maintenance managers aiming for precision and durability.

## Description

Centre locking drain test plugs with steel plates, brass wing nuts. Suitable for air or water testing of drains and sewers. Corrosion resistant. Used to temporarily seal a pipe for repair work & for low pressure testing. Material: Steel. Zinc plated. Choose from sizes: 1-1/2" (40mm). 2" (50mm). 2-1/2" (65mm). 3" (75mm). 3.5" (90mm). 4" (100mm). 4.5" (115mm) 5" (125mm)  6" (150mm). 7" (175mm) 8" (200mm)  9" (225mm). 10" (250mm) 11" (275mm)  12" (300mm). 13" (325mm) 14" (350mm)  15" (375mm) 16" (400mm)  18" (450mm)

## Features

- Centre locking drain test plugs with steel plates.
- Suitable for air or water testing of drains and sewers.
- Material: Steel.
- Sizes: 1-1/2" - 18" (40mm - 450mm)
- Used to seal a pipe for repair work & for low pressure testing.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | AB Tools |
| Part Number | SIL427A |
| Item Weight | 15.1 ounces |
| Product Dimensions | 3.94 x 3.94 x 3.15 inches |
| Item model number | 4" (100mm) |
| Size | 10 |
| Color | Black |
| Material | Alloy Steel |
| Number Of Pieces | 1 |
| Included Components | SIL427A |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 1](https://m.media-amazon.com/images/I/71JjN54LNsL.jpg)
![Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 2](https://m.media-amazon.com/images/I/71DwqZ0Zs1L.jpg)
![Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 3](https://m.media-amazon.com/images/I/71q4o9tv0NL.jpg)
![Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 4](https://m.media-amazon.com/images/I/71-desdV6BL.jpg)
![Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 5](https://m.media-amazon.com/images/I/71Za19PtlAL.jpg)

## Available Options

This product comes in different **Model** options.

## Frequently Bought Together

- Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap
- Sharkbite 1/2 Inch MNPT Bathroom Shower Test Plug, 25828Z

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**Shop now:** [https://www.desertcart.us/products/591268902-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop](https://www.desertcart.us/products/591268902-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-10*