2Scope of application DDAconsists of ashapedholewith aladderandaringshapedelastomericcomposition,ladder ringforms a complexwithdualpistonsurfacesealing effect.Shapedelastomerseal,ladder ringandprovides an elastic forcefrom the compensationforwear.Suitable forhydraulic cylinderpistonseals,generallyused in conjunctionwith theguide sleeve. Design and applyreferenceHunger'sTDA seriesstandards.
3Features and Benefits 1.Lowfriction, nostick-slip phenomenon 2.High wear 3.Under pressureand harshconditions withvery high pressurestability,good sealing effect
