The design of this seal allows for a wide variety of friction pairs usage. Preferable application for shafts of more than 60 mm diameters. With liquids prone to sediment formation or accretion build-up single cylindrical spring seal is suggested. With mechanical ingredients containing liquids the friction pair is of tungsten carbide (TC) or silicon carbide (SiC). Used with mechanical ingredients containing and non-containing neutral and aggressive liquids transportation pumps.