As SRP Rubber Solutions, in addition to our standard compound formulations, we develop technical rubber compounds with any required properties that meet ASTM or DIN standards. Compound Types: NR (Natural Rubber) SBR (Styrene-Butadiene Rubber) EPDM (Ethylene Propylene Diene Monomer Rubber) CR (Chloroprene Rubber / Neoprene) NBR (Nitrile Butadiene Rubber) HNBR (Hydrogenated Nitrile Butadiene Rubber) IIR (Butyl Rubber)