Skip to product information
1 of 1

McDonnell & Miller 304200 - Head Gasket, 10-Pack

McDonnell & Miller 304200 - Head Gasket, 10-Pack

Brand: McDonnell & Miller SKU: 304200
Regular price $9.80 USD
Regular price Sale price $9.80 USD
Sale Out of Stock - Call to Order
In Stock — Ships TODAY if ordered before 2:00 PM EST
Quantity
OEM manufacturer warranty Genuine factory-sourced

Ships factory-new in original packaging.

Not sure if a compatible flange, seal kit, or accessory exists for this item? Ask our team — we're happy to help you find the right part.

Official TIPS Contract Awarded Vendor Badge

TIPS Contract Vendor

Officially awarded purchasing cooperative vendor.

āœ“

Why Buy From Us

Every quote personally reviewed. Direct sourcing from top manufacturers.

View full details

Maintain a reliable, pressure-tight seal in your hydronic system with the McDonnell & Miller 304200 head gasket, supplied in a convenient 10-pack. This essential component is engineered to provide the high-integrity fit required to prevent leaks and maintain operational safety across various boiler control installations. Whether you are performing routine annual maintenance or addressing a specific seal failure, this 304200 replacement part ensures your equipment continues to function within specified pressure parameters.

The head gasket functions by creating a compression seal between the control head and the body of the unit, effectively containing the fluid or steam within the intended flow path. By replacing worn or brittle gaskets with this genuine McDonnell & Miller component, technicians can mitigate the risk of seeping, which protects sensitive internal electronics and mechanical sensors from environmental exposure and moisture damage.

Key System Performance Baselines:

  • Enhanced Sealing Integrity: Precision-molded material ensures a secure, airtight bond to prevent fluid bypass.
  • Consistent Material Quality: Constructed from durable, heat-resistant materials capable of withstanding the elevated temperatures of hydronic heating environments.
  • Maintenance Convenience: Packaged as a 10-piece set to streamline inventory management for multi-unit facility maintenance.

āš ļø Application Profile: Designed specifically for McDonnell & Miller boiler controls and low-water cut-off assemblies where a head-to-body gasket is required to restore unit performance.

Performance ParameterEngineering Baseline Value
Manufacturer Part Number (MPN)304200
Quantity Included10 Pack
Component TypeHead Gasket
šŸ¢

Corporate Procurement & PO Processing

Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.

Apply for Trade Account & Terms →

šŸ“‹ Procurement & Shipping Notice

  • LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
  • Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?

šŸ‘‰ Request a Commercial Quote or contact our procurement team for direct freight scheduling.