Laminar piston rings

[Metehanbektas]

I faced with an application, in which laminar piston rings are used on the piston. Normally, they are used in combustion engines. It's a normal hydraulic cylinder application, but extracts out relative faster around 15 m/s. Seals may heat very fast. Is it the reason why laminar ring is used, instead of normal NBR or FKM seals ?

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[HPost]

Lower friction and higher velocity capabilities

 

[tbuelna]

Don't recall ever seeing spiral wound rings used on combustion engine pistons. Used on hydraulic pistons they would minimize leakage versus conventional piston rings, and if sized correctly 15 m/s would not seem to present a problem. Elastomer seals at that velocity and pressure would not work well.