---
product_id: 504877156
title: "Steel Drain Test Pipe Bung/Plug 4\" (100mm) Plumbing Stop Tube Blanking Cap"
brand: "ab tools"
price: "$96.58"
currency: USD
in_stock: true
reviews_count: 13
category: "Ab Tools"
url: https://www.desertcart.ec/products/504877156-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop
store_origin: EC
region: Ecuador
---

# Seals pipes for air & water testing Centre locking mechanism for secure fit Steel construction for ultimate durability Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap

**Brand:** ab tools
**Price:** $96.58
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in reliability, test with confidence!

## 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?** $96.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/504877156-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

- • **Built to Last:** Robust steel plates ensure long-term reliability under pressure
- • **Versatile Fit:** Fits a wide range of pipe sizes from 1.5" to 18" (40mm-450mm)
- • **Precision Seal:** Engineered for airtight and watertight pipe testing
- • **Trusted by Pros:** Top-ranked plumbing test plug with 4.6-star rating and proven performance
- • **Effortless Locking:** Centre locking design guarantees a secure, hassle-free fit

## Overview

The Steel Drain Test Pipe Bung/Plug 4" (100mm) is a heavy-duty plumbing cap designed for secure sealing during air and water testing of drains and sewers. Made from durable steel with a centre locking mechanism, it fits pipes from 1.5" to 18" and is ideal for repair work and low-pressure testing. Highly rated by professionals, it combines strength, precision, and ease of use for reliable plumbing diagnostics.

## Description

Free delivery and returns on all eligible orders. Shop Steel Drain Test Pipe Bung/Plug 4" (100mm) Plumbing Stop Tube Blanking Cap.

Review: Well made and easy to use - Well made and easy to use. Does the job perfectly. Used on an outside drain that is now defunct.
Review: Sturdy bung - Does what it was designed for.

## 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 |
|---------------|-------|
| ASIN | B0BM4WHQ1B |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 8,271 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Plumbing Testing Equipment |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (102) |
| Date First Available | 11 Nov. 2022 |
| Included Components | Drain Test Plug |
| Item Weight | 430 g |
| Item model number | 4" (100mm) |
| Manufacturer | AB Tools |
| Material | Steel |
| Number of Pieces | 1 |
| Part Number | SIL427A |
| Product Dimensions | 10 x 10 x 8 cm; 430 g |
| Size | 10 |

## 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.

## Questions & Answers

**Q: Will this seal old clay pipe as well?**
A: Yes, But go steady tightening it up!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well made and easy to use
*by A***R on 17 November 2025*

Well made and easy to use. Does the job perfectly. Used on an outside drain that is now defunct.

### ⭐⭐⭐⭐⭐ Sturdy bung
*by S***N on 2 February 2026*

Does what it was designed for.

### ⭐⭐⭐⭐ Does the job, bung to block a pipe.
*by "***" on 10 October 2025*

Did the job, bunged up a empty pipe entry

## 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.ec/products/504877156-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop](https://www.desertcart.ec/products/504877156-steel-drain-test-pipe-bung-plug-4-100mm-plumbing-stop)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-23*