Excellent quality Air Valve Plastic - 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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We enjoy a very good reputation among our customers for our excellent product quality, competitive price and the best service for Precision Spring , Spring Sealing Ring , Engine Valve Crosshead , We attend seriously to produce and behave with integrity, and by the favor of customers at home and abroad in the xxx industry.
Excellent quality Air Valve Plastic - 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:

Excellent quality Air Valve Plastic -
 piston ring – DONGYI detail pictures

Excellent quality Air Valve Plastic -
 piston ring – DONGYI detail pictures


Related Product Guide:
What’s A 4/2 Compressed Air Valve?
What’s a 3/2 Compressed Air Valve?

We depend on sturdy technical force and continually create sophisticated technologies to meet the demand of Excellent quality Air Valve Plastic - piston ring – DONGYI, The product will supply to all over the world, such as: Panama , Rio de Janeiro , Namibia , Our products have been obtained more and more recognition from foreign clients, and established long term and cooperative relationship with them. We`ll provide the best service for every customer and sincerely welcome friends to work with us and establish the mutual benefit together.
  • Goods just received, we are very satisfied, a very good supplier, hope to make persistent efforts to do better.
    5 Stars By Page from Paraguay - 2017.03.28 16:34
    In our cooperated wholesalers, this company has the best quality and reasonable price, they are our first choice.
    5 Stars By Antonio from Slovakia - 2017.03.28 16:34
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