Stenso - Hovedkatalog 2019

Detailled information Polyurethane rod seals of the UN to SI/LA series exhibit faster response on account of the special groove to the pressure side. All illustrated rod seals from UN to SI/LA offer special advantages to the user. Please en- quire with the technical services as to which variant is the best for your application. We wel- come your enquires with respect to bio oils. UN This relates to the so-called standard type with symetric lip form and special groove depth. This profile can be used as piston as well as rod seal. Sealing lips are equally pre-stressed on inner and outer diameters. Many of the UN models can also be supplied in the RSA design. RSA This type is pre-stressed through an integrated NBR O-ring. This is advantageous at static low pressures and low temperatures. It can be used as piston seal and also as rod seal. SI Asymmetric sealing lips with reduction on the dynamic side significantly reduce fric- tion. Pre- stressing of this seal is mainly done by increasing the outer diameter. SI/LA All advantages mentioned for SI/L are applicable to the variant type SI/LA. The spe- cial advantage is that bigger gaps and pressures can operate through the intergra- ted extrusion ring SI/L The main difference when compared to all other types is the so- called SECONDARYLIPon the dynamic side. The advantages are: Reduced friction due to lubricant between the lips Significant stick slip improvement Temperature reduction at the dynamic sealing lip, thus gives longer life Fixation of rod seal at external diameter, so no tilting at high velocity is possible Lowwear due to exact positioning within gland groove Exact stabilisation in housing at low temperature Type SI/Lmainly contains various sizes for telescopic cylinders 103 UN, RSA, SI, SI/L and SI/LA Rod Seal UN RSA SI SI/L SI/LA