DLC Self-Lubricating Coating - Piston Rings CA2024-09-02PVD for Parts DLC coatingpiston ringSelf-lubricating coatings1429 Bench Test 30Hz reciprocating frequency, fully synthetic oil lubrication DLC Piston Rings - Wear Rate TestDLC Piston Rings - Coefficient of Friction TestDLC Piston Rings - Life Testing