Abstract: DLC film was fabricated on the H62 brass gasket by physical vapor deposition. Raman spectroscopy and cross-sectional morphology observation were performed on the film, and the thickness, nanohardness and adhesion strength were tested. Finally, friction-reduction and wear-resistant properties of the DLC film were analyzed after tribological test.Resultsshowed that the thickness of the DLC film on H62 brass gasket was totally 2.31 μm, the thickness of interlayer was approximately 0.49 μm. The hardness of DLC film was 22.1 GPa, and the adhesion between DLC film and the substrate was strong(HF1 for indentation and 41.1 N for scratching). When the H62 brass gasket was coated by DLC film, the friction coefficient decreased from 0.55 to 0.25, the wear rate decreased from 1.3×10^-4 mm³/Nm to 1.1×10^-5 mm³/Nm, meaning good friction-reduction and wear-resistant properties were achieved. After 10 times assembling and disassembling, the DLC film on gasket was complete, and no significant damage could be detected, therefore, the gasket with film could meet the requirement.