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'll make every effort and hard work to be superb and excellent, and speed up our steps for standing inside the rank of intercontinental top-grade and high-tech enterprises for Plastic Parts , Flanged Ball Valve 3 Way , Excavator Piston Ring , Inspired by the rapid developing market of the fast food and beverage consumables all over the world , We are looking forward to working with partners/clients to make success together.
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


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Fast and great quotations, informed advisers to help you choose the correct solution that suits all your requirements, a short creation time, responsible top quality manage and distinct providers for paying and shipping affairs for Excellent quality Air Valve Plastic - piston ring – DONGYI, The product will supply to all over the world, such as: Finland , Swansea , Spain , Our company sets up several departments, including production department, sales department, quality control department and sevice center,etc. only for accomplish the good-quality product to meet customer's demand, all of our products have been strictly inspected before shipment. We always think about the question on the side of the customers,because you win,we win!
  • The sales person is professional and responsible, warm and polite, we had a pleasant conversation and no language barriers on communication.
    5 Stars By Elvira from Denmark - 2018.09.21 11:01
    Customer service staff and sales man are very patience and they all good at English, product's arrival is also very timely, a good supplier.
    5 Stars By Sarah from Nigeria - 2017.04.08 14:55
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