Fel-Pro PermaTorque LaserWeld stopper layer design was first developed for Professional Stock Car racing engines, and is now available in Fel-Pro PermaTorque multi-layer-steel (MLS) head gaskets for a broad range of late-model automotive engines.
The new LaserWeld combustion seal ring provides a precisely determined and controlled limit to the compression of the multiple layers within the PermaTorque MLS head gasket, while ensuring proper sealing stress between the cylinder head and block. This helps reduce head lift commonly encountered in many late-model engines, prevents gasket damage and ensures a stronger, more superior combustion seal.
