Piston Ring Construction

Compression Rings

 

  • plain-compressionPlain Compression:
    This is a compression ring with a rectangular cross section and its geometrically simple form provides an adequate seal under normal operating conditions.
  • taper-Faced-CompressionTaper Faced Compression:
    This has a tapered running surface which is intended to shorten its running-in period. Due to its oil scraping action also, it is often used as an aid in controlling the oil consumption of an engine.
  • keystone-compressionKeystone Compression:
    This has both sides tapered and is used in cases when ring sticking can be expected.
  • half-keystone-compressionHalf Keystone Compression:
    This has one side tapered and is used in cases when ring sticking can be expected.
  • compression-with-inside-stepCompression With Inside Step:
    This has an asymmetrical change in the cross section which causes the ring to twist slightly inwards when installed and brings the bottom edge into contact with the cylinder wall, producing better sealing effects.
  • compression-inside-bevelledCompression Inside Bevelled:
    This also has an asymmetrical change in the cross section which causes the ring to twist slightly inwards when installed and brings the bottom edge into contact with the cylinder wall, producing better sealing effects.
  • compression-inside-bottom-bevelledCompression Inside Bottom Bevelled:
    This ring has an asymmetrical change in the cross section which causes negative twist in the ring.
  • napier-compressionNapier Compression:
    This ring is also known as scrapper and it has an oil scraping property.
  • compression-with-outside-stepCompression With Outside Step:
    This also has an oil scraping property.
  • laminated-steel-segmentsLaminated Steel Segments:
    These flexible, thin and multi-piece segments adapt themselves to any bore, worn or tapered and also provide generous and yet controlled lubrication.

Oil Control Rings

 

  • slotted-oil-controlSlotted Oil Control:
    This has two contact lands which are narrow and thus a high unit pressure is achieved to control the oil lubrication.
  • bevelled-edge-slotted-oil-controlBevelled Edge, Slotted Oil Control:
    This has outside edges of both lands chamfered in the opposite direction to improve the oil scraping effect.
  • double-bevelled-slotted-oil-controlDouble Bevelled, Slotted Oil Control:
    This has outside edges of both lands chamfered in the same direction to improve the oil scraping effect.
  • spring-loaded-slotted-oil-controlSpring Loaded, Slotted Oil Control:
    This has a cylindrical coil spring inside the slotted oil control ring to increase the radial pressure.
  • slotted-oil-control-with-expanderSlotted Oil Control With Expander:
    This slotted oil control ring has a steel expander spring backing to increase the radial pressure.
  • gx-oilmasterGX Oilmaster:
    This has a slotted oil ring with two steel side rails and a steel expander spring for effective oil control.
  • duaflexDuaflex:
    This is a multi-piece steel section oil ring with a spacer flanked by side rails, backed by an expander spring.
  • 3-flex-h-flex-nifflex3 flex / H flex / Nifflex:
    This is a 3 piece steel section oil ring with a spring spacer flanked by one side rail on both sides each.