OEM/ODM Factory Engine Piston Overhaul Assembly - piston ring – DONGYI

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Tribologically advantageous materials Gas-tight construction for low-molecular-weight gases piston rings seal the gas in the compression chamber of reciprocating compressors. They are customized, in terms of design and material, to the respective application conditions in refineries, the natural gas industry, as well as the petrochemical and chemical industries. The precisely manufactured rings also allow reliable operation with a long service life in industrial air production and many areas...


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As for aggressive rates, we believe that you will be searching far and wide for anything that can beat us. We can easily state with absolute certainty that for such good quality at such charges we are the lowest around for Hot Water Ball Valve , Hot Water Ball Valve , Air Vent Valve , Leading the trend of this field is our persistent goal. Providing first class products is our aim. To create a beautiful future, we would like to cooperate with all friends at home and abroad. Should you have any interest in our products, please do not hesitate to contact us.
OEM/ODM Factory Engine Piston Overhaul Assembly - piston ring – DONGYI Detail:

Tribologically advantageous materials
Gas-tight construction for low-molecular-weight gases

piston rings seal the gas in the compression chamber of reciprocating compressors. They are customized, in terms of design and material, to the respective application conditions in refineries, the natural gas industry, as well as the petrochemical and chemical industries. The precisely manufactured rings also allow reliable operation with a long service life in industrial air production and many areas of process engineering.

Piston rings, rider rings and bands are manufactured in various designs:

One-piece or segmental straight
Angle cut
Step cut
Twin Ring™
Double Twin Ring™
Two Segment
Pressure balanced
designs rings and has developed specific combinations for particularly problematic and demanding applications. This has also included numerous successful conversions from lubricated to non-lubricated operation.Pressure balanced rings are available, when deemed appropriate for high pressure applications and piston/rider ring combinations are also available for more specific applications.

Large diameter piston rings up to 47” (1200mm) are custom manufactured for special requirements. A range of metallic piston and rider rings are also manufactured, using selected grades of bronze or cast iron, where operational requirements dictate.


Product detail pictures:

OEM/ODM Factory Engine Piston Overhaul Assembly -
 piston ring – DONGYI detail pictures

OEM/ODM Factory Engine Piston Overhaul Assembly -
 piston ring – DONGYI detail pictures


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  • The quality of the products is very good, especially in the details, can be seen that the company work actively to satisfy customer's interest, a nice supplier.
    5 Stars By Grace from Orlando - 2018.11.11 19:52
    Good quality, reasonable prices, rich variety and perfect after-sales service, it's nice!
    5 Stars By Eden from Jamaica - 2018.12.30 10:21
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