Mercedes OM422 Auto Piston Ring 00366VO 800019511000 0618170020 Standard Size
High technology guarantee:
B. Heat treatment technics:
Using automatic heat treatment line for quenching and tempering treatment,
the use of koil for quenching medium to ensure quality of heat treatment.
c. Surface treatment technology:
Chromium ceramic composite coating.
By plating the piston ring outer face plated layer 0.1mm~0.4mm containing
ceramic powder (nano AL2O3 or Sic) of the chromium layer.