The most widely used elastomers
The most widely used compounds in the rubber industry are as follows:
Nitrile, (Buna), Fluorocarbon (Viton), Ethylene Propylene (EPDM/EPR), Silicone, and Neoprene (Chloroprene)
Your application will determine which base material you will choose a compound from, this is the first thing you need to consider when choosing your rubber material.
Once you choose which material group you will need, other factors will determine which actual compound # should be chosen for your application from the material group as each rubber compound base has numerous materials compounds that are specifically blended from the base polymer to meet specific application requirements.
You should have all application information, i.e. specifications which may be required, fluid contact, temperature requirements etc…
A rubber distributor is your best source to help you in making the best choice, so you will get the best performance from your rubber parts.