Description
Xylem-McDonnell & Miller 318800 Replacement Gasket
Keep your McDonnell & Miller boiler controls operating at peak performance with the genuine Xylem-McDonnell & Miller 318800 Replacement Gasket. Designed as a direct OEM replacement, this gasket restores a proper, leak-free seal on Series 61, 64, 67, 70, and 80 Series low-water cutoffs and pump controllers — helping you avoid costly downtime and maintain safe boiler operation.
Key Features
- Genuine OEM replacement gasket from Xylem-McDonnell & Miller
- Compatible with Series 61, 64, 67, 70, and 80 Series controls
- Model number: 67-12
- Ensures a reliable, leak-free seal on boiler control assemblies
- Simplifies maintenance and service — direct drop-in replacement
- Helps maintain safe, code-compliant boiler operation
Compatibility
- McDonnell & Miller Series 61 Low-Water Cutoffs
- McDonnell & Miller Series 64 Low-Water Cutoffs
- McDonnell & Miller Series 67 Low-Water Cutoffs
- McDonnell & Miller Series 70 Low-Water Cutoffs
- McDonnell & Miller Series 80 Low-Water Cutoffs
Why Choose Genuine OEM Parts?
Using genuine Xylem-McDonnell & Miller replacement parts ensures proper fit, function, and longevity. Aftermarket gaskets may not meet the precise dimensional tolerances required for safe boiler control operation. Trust the original manufacturer’s components to keep your hydronic heating system running safely and efficiently.







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