100% Original Factory Wholesale Piston Ring - Best Price on Two Stem Design Needle Valve - rider ring – DONGYI – DONGYI

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Selection from a comprehensive range of tribological materials No pressure applied to the rider ring by relief grooves Conversion of cylinder from lubricated to non-lubricated operation In reciprocating compressors, rider rings guide the piston in the cylinder bore. We manufacture them from materials that are specifically developed for the respective application.


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We are convinced that with joint endeavours, the small business between us will bring us mutual benefits. We could assure you products quality and competitive selling price for Stainless Steel Air Valve , Electronic Expansion Valve , Cryogenic Ball Valve , We have now ISO 9001 Certification and qualified this item .in excess of 16 years experiences in manufacturing and designing, so our items featured with best quality and competitive selling price. Welcome cooperation with us!
100% Original Factory Wholesale Piston Ring - Best Price on Two Stem Design Needle Valve - rider ring – DONGYI – DONGYI Detail:

Selection from a comprehensive range of tribological materials
No pressure applied to the rider ring by relief grooves
Conversion of cylinder from lubricated to non-lubricated operation
In reciprocating compressors, rider rings guide the piston in the cylinder bore.
We manufacture them from materials that are specifically developed for the respective application.


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