Engine Cylinder Piston Compression Ring Set 276-7476 2767476 for C.A.T C6.6

ASPHALT PAVER AP‑1000E,AP‑1055E,AP‑300D,AP‑55E,AP‑600D,AP‑655D,BG500E,BG600D,BG655D

BACKHOE LOADER 416E,420E,420F,422E,428E,428F,430E,430F,432E,432F,434E,434F,442E,444E,444F,450E

COMPACT WHEEL LOADER 914G

EXCAVATOR 320D GC,320D L,323D L

GENERATOR SET C4.4,C6.6

INDUSTRIAL ENGINE C4.4,C6.6

INTEGRATED TOOLCARRIER IT14G,IT14G2,IT38H

KNUCKLEBOOM LOADER 559

LOAD HAUL DUMP R1300G II

MOTOR GRADER 120M,12M

PIPELAYER PL61

PNEUMATIC COMPACTOR CW‑34

PUMPER SPF343C

TRACK LOADER 953D,963D

TRACK‑TYPE TRACTOR D3K XL,D4K XL,D5K LGP,D5R LGP,D6K,D6K LGP,D6K XL,D6N

VIBRATORY COMPACTOR CB‑54,CB‑54B,CB‑64,CP‑44,CP‑56,CP‑64,CP‑76,CS‑44,CS‑54,CS‑54B,CS‑56,CS‑56B,CS‑64,CS‑68B,CS‑74,CS‑74B,CS‑78B

WHEEL FELLER BUNCHER 2470C,553C

WHEEL LOADER 924H,924HZ,928H,928HZ,938H

WHEEL TRACTOR‑SCRAPER 613G

WHEELED EXCAVATOR M313D,M315D,M315D2,M316D,M317D2,M318D,M318D MH,M322D,M322D MH

• Plasma-Nitride Surface Barrier & Extreme Thermal Tension Retention: The outer running face is enhanced with a Plasma-Nitride/PVD hard coating, delivering extreme surface hardness and a low friction coefficient. It retains consistent radial expansion tension under peak combustion temperatures, effectively preventing thermal tension loss and blow-by under heavy load cycles.
• Positive Keystone & Tapered Edge Profile for Dynamic Oil Control: Engineered with a precision keystone and tapered-edge cross-section profile. Driven by pressure variations during piston strokes, it dynamically tilts to form a micro-lubrication film on upward strokes while aggressively scraping excess oil on downward strokes, preventing oil carbonization in the combustion chamber. 
• Anti-Microwelding Profile & High-Ductility Cast Iron Substrate: Cast from high-ductility alloy iron, featuring super-finished upper and lower side faces treated with anti-sticking properties. This profile prevents "microwelding" and side wear inside the piston ring groove caused by high-frequency pounding, dramatically extending groove and ring longevity.