Gasket valve box.

Placed between the valve box and the cylinder, it should provide sealing and circuit continuity of air-oil-fuel needed by the engine Top80.

It must withstand high thermal and chemical stresses. It is therefore a significant part of an engine.
This gasket must allow the passage of the assembly between the cylinder stud and the valve box.

What are the valves?

Attached to the admission of two-stroke engines, the valves are flexible strips opening on the gas intake from the carburetor. They then return to their place, to prevent the return of fresh gas. And more torque and power at low and medium engine speeds is obtained if the seal valve and carburetor gasket are tight.