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Dual-Source Piston Ring Solutions – Genuine GOETZE OEM or High-Performance Domestic for MAN Marine Engines

Parameter	OEM Version	Domestic Version
Product Type	3/4-piece Piston Ring Set (Compression + Scraper + Oil Control)	For MAN 2/4-stroke marine diesel engines
Application	MAN B&W 2-stroke & MAN 32/40/27/38 4-stroke Marine Diesel Engines	Compatible with all MAN marine propulsion and generator engines
Material	High-grade cast iron with special alloy additions	High-grade alloy cast iron
Top Compression Ring	Keystone or Rectangular profile with Chromium plating, GOETZE’s proprietary surface treatment	Chromium-plated cast iron ring
Second Compression/Scraper Ring	Taper-faced or Napier profile with special anti-wear coating	Standard taper-faced ring
Oil Control Ring	3-piece segmented design with expanders	Segmented oil control ring
Surface Coating	GOETZE proprietary Chromium, Molybdenum, or PVD coating	Chromium or Phosphated coating
Hardness	Optimized for MAN engine specifications (HRC 45–55)	Matches OEM hardness standards
Quality Standards	Genuine GOETZE OEM Certified	ISO 9001, IACS Compliant
Service Life	≥24,000 running hours	≥18,000 running hours

Piston rings

Dual-Source Piston Ring Solutions – Genuine GOETZE OEM or High-Performance Domestic for MAN Marine Engines

Parameter	OEM Version	Domestic Version
Product Type	3/4-piece Piston Ring Set (Compression + Scraper + Oil Control)	For MAN 2/4-stroke marine diesel engines
Application	MAN B&W 2-stroke & MAN 32/40/27/38 4-stroke Marine Diesel Engines	Compatible with all MAN marine propulsion and generator engines
Material	High-grade cast iron with special alloy additions	High-grade alloy cast iron
Top Compression Ring	Keystone or Rectangular profile with Chromium plating, GOETZE’s proprietary surface treatment	Chromium-plated cast iron ring
Second Compression/Scraper Ring	Taper-faced or Napier profile with special anti-wear coating	Standard taper-faced ring
Oil Control Ring	3-piece segmented design with expanders	Segmented oil control ring
Surface Coating	GOETZE proprietary Chromium, Molybdenum, or PVD coating	Chromium or Phosphated coating
Hardness	Optimized for MAN engine specifications (HRC 45–55)	Matches OEM hardness standards
Quality Standards	Genuine GOETZE OEM Certified	ISO 9001, IACS Compliant
Service Life	≥24,000 running hours	≥18,000 running hours

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+8613930309918

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