The Cometic MLS cylinder head gasket for Nissan RB20DE/RB20DET (80mm bore) is made from multiple embossed stainless steel layers with Viton-coated outer faces and a compressed operating thickness noted in source. MLS construction provides corrosion resistance, rebound capability and strength to tolerate shearing between head and block materials. It seals high-output engines without requiring additional sealants.
Cometic Nissan RB20DE/RB20DET .027in MLS Cylinder Head Gasket - 80mm Bore