Strainer Screen and Cylinder m-33 Float Gasket Mcdonnell 67-12 Replacement

Product Description

The Strainer Screen And Cylinder M-33 is a replacement float gasket designed to work with McDonnell 67-12 float controls and similar low-water cutoff assemblies used in boiler systems. This gasket provides a reliable seal within the float chamber, preventing leaks and maintaining proper pressure containment during boiler operation. HVAC technicians and boiler service professionals rely on precision-fit replacement gaskets like the M-33 to restore the integrity of McDonnell float-type controls without replacing the entire assembly. The float chamber in a low-water cutoff device is a critical component. It houses the float mechanism that monitors water level in the boiler. When the water level drops below the safe threshold, the float triggers a shutoff to protect the heat exchanger from damage. A worn or compromised gasket in this assembly can result in steam leaks, false readings, or system failure. Using the correct OEM-specification replacement part ensures the float chamber seals properly and the control operates as designed. The M-33 gasket from Strainer Screen And Cylinder Co. is manufactured to match the original specifications of the McDonnell 67-12 control, making it a direct drop-in replacement for maintenance and repair work. This part is commonly stocked by boiler service contractors, mechanical rooms in commercial buildings, and HVAC supply houses serving heating professionals. Keeping replacement gaskets on hand reduces downtime during scheduled maintenance or emergency service calls. The M-33 is a small but essential part of a safe and properly functioning hydronic heating or steam boiler system.

• Replacement float gasket compatible with McDonnell 67-12 float controls and low-water cutoff assemblies
• Designed for use in steam and hydronic boiler systems requiring precise float chamber sealing
• Manufactured by Strainer Screen And Cylinder Co. to original replacement specifications

Product Highlights

The M-33 is a direct replacement float gasket for McDonnell 67-12 low-water cutoff controls, helping HVAC and boiler technicians restore proper float chamber sealing during routine maintenance or emergency repairs.

Product Information

Standard Information

• Brand: STRAINER SCREEN AND CYLINDER CO.
• Manufacturer Part Number: m-33

Technical Specifications

• Product Type: Float Gasket
• Compatible Control: McDonnell 67-12
• Application: Boiler Low-Water Cutoff Float Assembly