---
product_id: 672951222
title: "AB Tools Steel Drain Test Pipe Bung/Plug 4\" (100mm) Plumbing Stop Tube Blanking Cap"
brand: "ab tools"
price: "£2.35"
currency: GBP
in_stock: false
url: https://www.desertcart.co.uk/products/672951222-ab-tools-steel-drain-test-pipe-bung-plug-4-100mm
store_origin: GB
region: United Kingdom
---

# Air & water testing ready Centre locking mechanism Durable steel construction AB Tools Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap

**Brand:** ab tools
**Price:** £2.35
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Lock it down, test it right — the pro’s choice for flawless pipe sealing!

## Quick Answers

- **What is this?** AB Tools Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap by ab tools
- **How much does it cost?** £2.35 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/672951222-ab-tools-steel-drain-test-pipe-bung-plug-4-100mm)

## 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" (40mm to 450mm) to fit virtually any pipe diameter with precision.
- • **Lightweight & Compact:** At just 430g and 10x10x8 cm, it’s easy to handle and install, saving you time and effort.
- • **Secure Centre Locking:** Ensures a tight, reliable seal every time with robust steel plates and brass wing nuts.
- • **Corrosion-Resistant Steel:** Zinc-plated steel resists rust and wear, guaranteeing long-lasting performance on the job.
- • **Versatile Testing Compatibility:** Perfectly engineered for both air and water pressure testing of drains and sewers.

## Overview

The AB Tools Steel Drain Test Pipe Bung/Plug 4" (100mm) is a zinc-plated, corrosion-resistant steel plug designed for secure centre locking to seal pipes during repair or low-pressure air and water testing. Available in a broad size range, it combines durability with ease of use, making it an essential tool for professional plumbers and maintenance managers aiming for precision and reliability.

## 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 |
|---------------|-------|
| Brand | AB Tools |
| Model Number | SIL427A |
| Color | Black |
| Product Dimensions | 10 x 10 x 8 cm; 430 g |
| Material | Steel |
| Item Weight | 430 g |

## Images

![AB Tools Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 1](https://m.media-amazon.com/images/I/71JjN54LNsL.jpg)
![AB Tools Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 2](https://m.media-amazon.com/images/I/71DwqZ0Zs1L.jpg)
![AB Tools Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap - Image 3](https://m.media-amazon.com/images/I/71q4o9tv0NL.jpg)
![AB Tools 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)
![AB Tools 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 **Size** 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.co.uk/products/672951222-ab-tools-steel-drain-test-pipe-bung-plug-4-100mm](https://www.desertcart.co.uk/products/672951222-ab-tools-steel-drain-test-pipe-bung-plug-4-100mm)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-15*