The addition of oligoamidephosphates (OAPh) without reducing the quantity of the sulphenamide accelerator in NBR compounds offers additional acceleration of the curing process and gives vulcanizates with good mechanical properties and ageing resistance, The vulcanization accelerated with OAPh as sole accelerator is very slow but it leads to vulcanizates with high tensile strength, The activity of OAPh in NBR compounds is similar to their activity in IR and SBR.