Stenso - Hovedkatalog 2019

Use in shaft eccentricity or misalignment cases: The V-shape profile ensures an effective and reliable sealing function even with an oval cross section or eccentric shafts. The tilted seal lip gives a very good sealing ef- fect against sealing surface area. The purpose is to not get to large a surface contact. Choice of material NBR - Standard for most applications from -40°C up to +120°C (+90°C in water) - good resistance to mineral oils, water, lubricants and radiator fluids, - high tensile strength. Not resistant to glycol based truck brake fluids. Low resistance to aromatic solvents and carbon tetrachloride, trichloroethylene (chlorine containing hydrocar- bons) FP - Recommended for high temperature applications ( - 30 up to +200 °C) , good chemical resistance, outstanding resistance to mineral oils, acids. Good resistance to aromatic and chlorine containing hydrocarbons, ageing, weathering influences, ozone. Low temperature flexibility restriction, Low resistance to polar fluids like kentone, ether, ester. SIL -Recommended for fluctuating service temperatures ( - 60 up to +220 °C) at low rotational velocities. Resists continuous heating even at higher temperatures with- out hardening. Remains flexible even at very low temperatures. Resistant to mineral oils, lubricants and alkaloids. Outstanding resistance to ageing, weathering influ- ences and ozone. Not recommended for use with hydrocarbons, fuels and paraffins or light mineral oils. Not resistant to hot water, oils and non mineral based brake flu- ids for trucks. CR - Application range ( - 40 up to +80 °C) High tensile strength up to 15 MPa, out- standing resistance to ageing, weathering and ozone. Limited resistance to mineral oils and lubricants. Not resistant to nonmineral basedbrake fluids for trucks. Surface: The characteristics of the seal counter surface determines the service life of the sealing lip to a larage extent. Surface roughness should be designed to Ra < 0,4 and should be free of sharp edges and scratches that could wear out the sealing lip in a short time. 289 VA, VS, VL and VE V-ring