NPR SDF30022-2 Piston Ring Set

The NPR SDF30022-2 is a precision-engineered piston ring set manufactured by Nippon Piston Ring Co., Ltd., Japan's premier piston ring manufacturer since 1931. This diesel engine piston ring set is designed to deliver superior sealing performance, oil control, and durability under the demanding conditions of modern engines.

Key Features:

• High-quality materials including steel and cast iron construction for enhanced strength and wear resistance
• Advanced surface treatments such as chrome plating, nitriding, or Ferrox coating for extended service life
• Engineered to seal combustion gases, control lubricating oil, and dissipate heat effectively
• Precision-machined to ensure proper fit and optimal cylinder wall contact
• Reduces oil consumption and prevents blow-by for improved engine performance
• Tested on actual engine test benches to ensure reliability and quality

NPR piston rings are manufactured to meet or exceed OEM specifications and are supplied to all major Japanese engine manufacturers. Each ring set typically includes compression rings and oil control rings engineered to work together as a complete system for maximum efficiency and longevity.