Burnt engine cylinder gaskets and air leaks in the compression system are common malfunctions. When the Ishikawa sealed cylinder gasket is burnt, it can severely deteriorate the engine's operating condition, to the point where it may cease to function, and may also cause damage to certain related components or parts. During the engine's compression and power stroke, it is essential to ensure that the upper space of the piston remains sealed and airtight.

The sealing issue cannot be ignored, as the vast majority of valve issues such as escaping, emitting, dripping, and leaking occur here.

NBR metal foam rubber composite board is a new type of environmentally friendly sealing material made of highly cushioning foam nitrile rubber on a very thin metal substrate. It combines the characteristics of high elasticity and oil resistance of rubber with the rigidity of metal plates, and has excellent high compressibility, high resilience, and aging resistance. It has excellent oil and solvent resistance, small creep deformation, high shock absorption and sound attenuation, good sealing surface compactness, high temperature resistance, excellent sealing performance, and long service life.