Dura-Bond 70650 Sintered Tungsten Valve Seat Insert 1.630" OD

The Dura-Bond 70650 is a high-performance valve seat insert from the 70000 Series, engineered for heavy-duty and extreme-duty engine applications. This sintered tungsten carbide tool steel valve seat insert features a 1.630-inch outer diameter, 1.313-inch inner diameter, and 0.250-inch thickness, making it suitable for both intake and exhaust valve applications.

Advanced Material Construction:

• Sintered tungsten carbide tool steel construction with finely dispersed carbide particles in a tempered tool steel matrix
• Special additives blended into the matrix provide built-in high-temperature lubrication properties throughout the material
• Patented materials and processing deliver excellent machinability that cuts almost like cast iron
• Superior wear resistance and high heat resistance for demanding applications

Heavy-Duty Performance Features:

• Designed specifically for heavy-duty and extreme-duty engine applications
• Withstands higher levels of thermal and mechanical stress than standard cast chrome or alloy iron seats
• Material remains impervious to extreme heat and machining operations
• Enables use in "dry" fuel applications including propane (LPG) and natural gas where lubrication is minimal
• Prevents micro-welding between valve seat and valve face, eliminating primary cause of valve seat erosion

Multi-Fuel Compatibility:

The Dura-Bond 70000 Series inserts are engineered for use in engines running diesel, unleaded gasoline, propane, and natural gas. The built-in solid lubricants enable reliable performance across all fuel types, including challenging dry-fuel applications where traditional seats fail prematurely.

Specifications:

• Outside Diameter: 1.630 inches
• Inside Diameter: 1.313 inches
• Thickness: 0.250 inches
• Application: Intake and Exhaust
• Material: Sintered Tungsten Carbide Tool Steel
• Series: 70000 (Heavy/Extreme Duty)