What you are really asking is, “what is the expected production life of my rubber mold?”.
First, we need to distinguish between the “production life” and “library life” of a rubber mold.
Library Life refers to how long a rubber mold will last in your “mold library”, just sitting on a shelf and not being used. Some mold rubbers last longer than others. Below is a chart giving you an idea of the library life you can expect from various mold rubbers:
Mold Rubber Approx. Library Life
Urethane (polyether based) ReoFlex, VytaFlex, Some PMCs - 25+ Years
Urethane (polyester based) PMC-724, PMC-726 - 1-7 Years (Moisture Exposure Dependent)
Silicone - Economy (tin cat) OOMOO Silicones - 1 Year
Silicone - Library Life (tin cat) Mold Max Series - 5-7 Years
Silicone - Platinum Catalyst Smooth-Sil, Dragon Skin - 30+ Years
Polysulfide FMC Series - 40+ Years
Latex - 10+ (With Proper Care)
Vinyl - 5+ (With Proper Care)