Dimensional stability of elastomeric impression material can be given in descending order as :
Polysulphide > Polyether > Condensation silicone > Addition silicone
Polyether > Condensation silicone > Polysulphide > Addition silicone
Addition silicone > Polyether > Polysulphide > Condensation silicone
Addition silicone > Condensation silicone Polysulphide > Polyether