Profile: Unique Engineering offers multiple spring, mechanical cartridge, single coil and bellow seals. Our cartridge seals are made of stainless steel, tungsten carbide, carbon and ceramics. Our seal has durability, tensile strength and resistivity. It is available in single and multi spring types with sleeve & gland plate. Our single coil conical spring seal has a compact structure with straight spring or a mounted structure. We also provide pump spares such as shaft, sleeve, impellers and brackets.