CPS STYLE 2810/2820,2811/2821 SOFT INJECTION PACKINGS   This is a new type of packing, changes the traditional seal mode mainly with braided packing and has the following advantages: Need of merely one type of packing for all units to be sealed, instead of diversified spare parts. Easy maintenance, just requiring “full packing”. No strict requirements on precision of packing box and shaft, especially suitable for seal of the worn-out shaft. Keeping “zero leakage”, and meeting the requirements of energy-saving and environmental protection.