Difference between nylon caster and polyurethane caster

Nylon caster have high hardness,loud sound,but slightly thrust required.

Polyurethane caster have less hardness, low operation sounds,but need ore force to push heavy objects

General speaking nylon caster have high hardness,more wear resistance,and can load much heavy objects,

Polyurethane are softer,better in noise reduce, intensity relatively badly

Of course there have soft nylon,and hardness polyurethane

　　Nylon wheel wear of the floor will be bigger, when turning the noise is large,  polyurethane seismic capacity is good,for the material in all the wheels, the wheels of polyurethane are best performance in all aspects!