---
product_id: 63787398
title: "Mission Rubber 105643 MR56 43 Flex-Seal Coupling, 4-Inch Plastic/Cast-Iron to 3-Inch Plastic/Cast-Iron"
brand: "mission rubber"
price: "€ 7.41"
currency: EUR
in_stock: false
url: https://www.desertcart.fi/products/63787398-mission-rubber-105643-mr56-43-flex-seal-coupling-4-inch
store_origin: FI
region: Finland
---

# Leakproof design 4" to 3" transition Corrosion resistant Mission Rubber 105643 MR56 43 Flex-Seal Coupling, 4-Inch Plastic/Cast-Iron to 3-Inch Plastic/Cast-Iron

**Brand:** mission rubber
**Price:** € 7.41
**Availability:** ❌ Out of Stock

## Summary

> 🔗 Connect with Confidence!

## Quick Answers

- **What is this?** Mission Rubber 105643 MR56 43 Flex-Seal Coupling, 4-Inch Plastic/Cast-Iron to 3-Inch Plastic/Cast-Iron by mission rubber
- **How much does it cost?** € 7.41 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/63787398-mission-rubber-105643-mr56-43-flex-seal-coupling-4-inch)

## Best For

- mission rubber enthusiasts

## Why This Product

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

## Key Features

- • **Leakproof Assurance:** Engineered with stepped surfaces for a secure, leakproof seal.
- • **Seamless Transition:** Easily connects 4" and 3" pipes for versatile applications.
- • **Durable Construction:** Crafted from molded natural and synthetic rubber for long-lasting performance.
- • **Marine Grade Strength:** Features 311 Series Marine Grade Stainless Steel for superior corrosion resistance.
- • **Versatile Compatibility:** Perfect for both plastic and cast-iron pipes, ensuring broad usability.

## Overview

The Mission Rubber 105643 MR56 Flex-Seal Coupling is a robust solution for transitioning between 4-inch and 3-inch pipes, featuring a leakproof design and corrosion-resistant materials, making it ideal for various environments.

## Description

Flexibility – Sleeve is manufactured of molded natural and synthetic rubber; leakproof seal – Inside surfaces of transitional size couplings are stepped to conform better to different pipe sizes; side B: 4.36-Inch, side B: 3.38-inch, Length: 4-Inch; Corrosion resistant – Use of stainless steel clamping bands are highly effective in a variety of environments; 311 Series Marine Grade Stainless Steel conforms to ASTM A 240

## Features

- Flexibility - Sleeve is manufactured of molded natural and synthetic rubber
- Leakproof Seal - Inside surfaces of transitional size couplings are stepped to conform better to different pipe sizes
- Side A: 4.36-Inch, Side B: 3.38-Inch, Length: 4-Inch
- Corrosion Resistant - Use of stainless steel clamping bands are highly effective in a variety of environments
- 311 Series Marine Grade Stainless Steel conforms to ASTM A 240

## Images

![Mission Rubber 105643 MR56 43 Flex-Seal Coupling, 4-Inch Plastic/Cast-Iron to 3-Inch Plastic/Cast-Iron - Image 1](https://m.media-amazon.com/images/I/51EPNrnHL0L.jpg)

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**Shop now:** [https://www.desertcart.fi/products/63787398-mission-rubber-105643-mr56-43-flex-seal-coupling-4-inch](https://www.desertcart.fi/products/63787398-mission-rubber-105643-mr56-43-flex-seal-coupling-4-inch)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-10*