R9 specification hose is suitable for use with E10 pump fuel and ethanol fuels. R9 hose has a FKM inner and a nitrile outer layer. This hose is available as either a plain rubber hose or with a stainless steel braid. The R9 hose is available in bore sizes of 1/4" (6mm), 5/16" (8mm), 3/8" (10mm).