Excavator hydraulic cylinder piston anti fouling ringKZT seals, also known as anti fouling rings, are installed on the outermost ends of both sides of the piston seal,The main function is to prevent stains in the hydraulic oil from entering the main sealing position of the piston,Causing (pulling) damage to the main seal, and also preventing gas from entering the main seal,Causing gas explosion or Diesel effect burns to the main seal. Commonly used in engineering machinery and metallurgical machinery oil cylinders. Hydraulic cylinder piston seal KZT/green SPC Excavator Cylinder Piston Seals Excavator cylinder oil seals KZT SPC Specification Details Specification Details Specification Details Specification Details D H9 d h9 T L+0.2 D H9 d h9 T L+0.2 D H9 d h9 T L+0.2 70 62 4 4.1 130 122 6 6.2 165 157 7.9 8.1 75 67 4 4.1 135 127 6 6.2 170 162 7.9 8.1 80 72…