McDonnell & Miller 325400 Head Gasket No Mounting Holes 150-14

Description

The McDonnell & Miller 325400 (Model 150-14) is a replacement head gasket engineered for use with the 93, 193, and 150 Series low-water cutoffs and pump controllers featuring flat flange head units. Designed without mounting holes, this gasket delivers a precise, leak-free seal that restores proper operation and maintains the integrity of your hydronic boiler system.

Key Features

• Model Number: 150-14
• No mounting holes — designed specifically for flat flange head unit configurations
• Compatible with McDonnell & Miller 93, 193, and 150 Series units
• OEM-quality replacement gasket for reliable, long-lasting performance
• Ensures a proper seal between the head and body of the control unit
• Helps prevent leaks and maintains system pressure integrity

Compatibility

• McDonnell & Miller 93 Series low-water cutoffs and pump controllers
• McDonnell & Miller 193 Series low-water cutoffs and pump controllers
• McDonnell & Miller 150 Series low-water cutoffs and pump controllers
• Flat flange head unit configurations only

Application

This head gasket is an essential maintenance and repair component for steam and hot water boiler systems utilizing McDonnell & Miller low-water cutoff controls. Replacing a worn or damaged head gasket promptly helps prevent water leaks, protects boiler components, and ensures the control unit continues to function safely and accurately. Always verify your unit’s series and head configuration before ordering.