Mission Rubber Company 6220m8g 4 Inch No-hub Coupling

Product Description

The MISSION RUBBER COMPANY 6220m8g is a 4-inch standard no-hub coupling designed to join cast iron or compatible no-hub drain, waste, and vent (DWV) pipe sections without hubs or threading. The coupling uses a neoprene sleeve and stainless steel band clamps to create a watertight, pressure-resistant connection. Domestically manufactured, this fitting is built to standard no-hub specifications and is suitable for new construction and repair installations. Licensed plumbers and drain contractors typically install this fitting in below-grade and above-grade DWV systems.

This coupling is applied in residential and light commercial plumbing systems where no-hub cast iron pipe is the specified material. Common installation scenarios include connecting pipe sections in horizontal drain runs, vertical stacks, and building sewer lines. It is cataloged under the Ideal cross-reference 6220M8G and the Mission cross-reference 1804012, making it a recognized replacement across multiple supply channels. The 4-inch size fits standard 4-inch no-hub pipe used in main drain and soil stack applications.

Key Features

• 4-inch standard no-hub configuration for DWV pipe joining
• Flexible fitting design accommodates minor pipe misalignment
• Domestic manufacture to standard no-hub coupling specifications
• Cross-referenced as Ideal 6220M8G and Mission 1804012
• Neoprene sleeve with stainless steel band clamp construction for watertight sealing

Compatibility

Cross-referenced as Ideal 6220M8G and Mission 1804012. Designed as an OEM-style replacement fitting for 4-inch standard no-hub cast iron DWV piping systems.

Installation Notes

Installation is performed by a licensed plumber. Ensure the pipe ends are clean, deburred, and properly aligned before seating the neoprene sleeve. Tighten band clamps to the torque specification printed on the coupling or per the no-hub coupling standard in your jurisdiction. Work must comply with applicable local plumbing codes and the International Plumbing Code (IPC) where adopted.

Technical Specifications

• Pipe Size: 4 inches
• Coupling Type: Standard No-Hub
• Category: Flexible Fittings
• Origin: Domestic

Standard Information

• Brand: MISSION RUBBER COMPANY
• Manufacturer Part Number: 6220m8g