For selected applications, ACL Race Series Proseal® Multi-layered Steel Gaskets are available as a Cylinder Head Gasket or a Full Gasket Set. 

These gaskets comprise three layers of stainless steel riveted together.   While the centre layer comprises uncoated stainless steel, the outer layers are coated with a Viton® rubber compound which takes up minor irregularities in the surfaces and allows for minor lateral movement between the head and block.  The Viton® coating is heat resistant to 250°C (482°F).  The outer layers are also embossed around the bores and other apertures to provide areas of high load concentration for sealing.

Suitable for use in forced induction engines (i.e. supercharged or turbocharged) and sealing under harsh conditions ACL Race Series Proseal ® Gaskets offer the following benefits:

• Excellent sealing when the clamping pressure fluctuates due to combustion pressures
• Strength & hardness
• Resistance to corrosion at very high temperatures
• Resistance to relaxation in the embossed regions
• No re-torque necessary