---
product_id: 100711542
title: "MK Masterseal Plus K56506GRY Junction Box , Grey"
brand: "masterseal plus"
price: "$U3888"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/100711542-mk-masterseal-plus-k56506gry-junction-box-grey
store_origin: UY
region: Uruguay
---

# Patented gel seal tech Extreme temp tolerance IP66 dust & water proof MK Masterseal Plus K56506GRY Junction Box , Grey

**Brand:** masterseal plus
**Price:** $U3888
**Availability:** ✅ In Stock

## Summary

> ⚡️ Master the elements with MK Masterseal Plus – where toughness meets tech innovation!

## Quick Answers

- **What is this?** MK Masterseal Plus K56506GRY Junction Box , Grey by masterseal plus
- **How much does it cost?** $U3888 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/100711542-mk-masterseal-plus-k56506gry-junction-box-grey)

## Best For

- masterseal plus enthusiasts

## Why This Product

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

## Key Features

- • **Long-Term Peace of Mind:** Backed by a 20-year guarantee, this junction box is a future-proof investment for professionals demanding reliability and durability.
- • **Versatile Compatibility:** Seals around virtually any standard 13 amp plug, including molded plugs, making it the go-to choice for diverse indoor and outdoor applications.
- • **Built to Endure Extremes:** Crafted from recycled polycarbonate, this junction box resists UV fading, cracking, and performs flawlessly in both scorching heat and freezing cold.
- • **Unrivaled Weatherproofing:** IP66 rating guarantees total dust ingress protection and resistance to powerful water jets from any angle—perfect for unpredictable environments.
- • **Effortless, Secure Installation:** Innovative fixed gel seal and improved catch design ensure a foolproof, quick setup with zero risk of sealing errors.

## Overview

The MK Masterseal Plus K56506GRY Junction Box is a robust, IP66-certified electrical enclosure designed for superior protection against dust and high-pressure water jets. Made from durable recycled polycarbonate, it withstands extreme temperatures and UV exposure without degradation. Featuring a patented gel seal and an improved catch for easy, error-free installation, it supports a wide range of plugs and comes with a 20-year guarantee, making it ideal for demanding indoor and outdoor professional environments.

## Description

Product Description               MK Electric has always been at the forefront of technical innovation, especially when it comes to making weatherproof sockets and switches that are perfect for outdoor applications or damp and dusty environments. MK Electric is pleased to introduce its MK Masterseal Plus range, a range of IP-rated products that have been tested to levels well in excess of British Standards to ensure users are safeguarded in the harshest of environments MK Masterseal Plus has been specifically developed for use in both outdoor and indoor environments, and where wiring devices and accessories would be at risk from penetration by dust or water. With a rating of IP66, Masterseal Plus offers total protection against dust, and is protected against high-pressure jets of water from any direction. MK Masterseal Plus sockets can seal around virtually any standard 13 amp plug, including moulded plugs, allowing safe connection for any appliance. Masterseal Plus enclosures are made from recycled polycarbonate, one of the toughest thermoplastics available. With its robust construction and superb temperature tolerance, MK Masterseal Plus will not discolour, crack or fade in UV light and it will maintain its operation in extremes of heat and cold. An improved catch on the MK Masterseal Plus eases the opening and closing of the lid, whilst ensuring the integrity of the seal. The seal is fixed to the mounting frame, enabling rapid installation and removing the risk of error when placing a floating gasket. The Masterseal Plus range extends to more than 90 product variants and all are guaranteed for 20 years. MK Masterseal Plus is perfectly suited to a range of indoor and outdoor applications including in factories, laboratories, swimming pools, commercial kitchens, industrial units, warehouses, clean rooms and more.                  Box Contains               1 x Junction box1 x Instruction leaflet

## Features

- IP66 rated
- Robust construction and tempertaure tolerant
- Patented gel seal
- Wide range of products available
- 20-year guarantee

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | MK |
| Part Number | K56506GRY |
| Package Dimensions | 10.7 x 9.8 x 6.7 cm; 220 g |
| Item model number | K56506GRY |
| Colour | Grey |
| Style | Protection |
| Finish | Textured |
| Material | Thermoplastic |
| Installation method | Screw-In |
| Item Package Quantity | 1 |
| Certification | IP66 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 220 g |

## Product Details

- **Material:** Thermoplastic
- **Brand:** Masterseal Plus
- **Colour:** Grey
- **Style:** Protection
- **Finish type:** Textured

## Images

![MK Masterseal Plus K56506GRY Junction Box , Grey - Image 1](https://m.media-amazon.com/images/I/71RYz63kzoL.jpg)

## Questions & Answers

**Q: Is this 30 amp**
A: MK Masterseal Plus range, a range of IP66-rated weatherproof box for sockets Terminals and switches that are perfect for outdoor applications or damp and dusty environments. In their brochure it says  13 amp. I bought mine back in Feb 2012 wiring between house and shed for a supply. So i don`t think it is meant for 30 amps. Mine has been outside in all weathers and has not leaked yet.

**Q: I am wanting black ones of these masterseal junction boxes part number k56506blk are you getting any of these ?.**
A: I don't think that MK do a black version of this. I have only seen white and grey.

**Q: does this have a rear entry knockout**
A: Yes, however, unlike the side access holes, it is not a push out plug, but an actual old school knock-out section. BUT, it is NOT in the center of the box, it is offset, so if you were to use it, it will make using the supplied connection hub somewhat difficult, if not impossible.
If you need to use a rear entry point, i would drill a 20mm hole in the center using a small hole saw ans connect a suitable cable access gland or conduit connector., that way the cable will access in the middle of the connection hub supplied and it will be much more user friendly.

**Q: What size glands does it need**
A: The knock-outs (one on each side) are M20, so they are for 20mm glands !
There is a knock-out on the back but it is off centre for some reason !
My installation was  'top' and 'side' and I had no problems. 
Hope that helps !

## Frequently Bought Together

- MK Masterseal Plus K56506GRY Junction Box , Grey
- SWA Pack of 2 TCW20S PACK ALT-EN Gland Packs Complete with EarthingNuts. Suitable for outdoor use, SWA armoured cables.

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-20*