... heat deflection temperature. II. PA Nylon Characteristics (Nylon water pipes):1. High strength and stiffness 2. High impact ... safe, noise reduction III. PA Nylon Disadvantages (Nylon water pipes): 1. Poor dimension stability, electrical and mechanical properties ... gears, wheels, roller shaft, water pump impeller, rope, fishing nets and transformer coil, Nozzle, Fan blades, structural panels, wear pads ...