A hydraulic mount apparatus comprising: a housing having an upper portion and a lower portion disposed on a center axis and defining a housing chamber (30, 32, 34); a partition member disposed in said housing chamber (30, 32, 34) dividing said housing chamber (30, 32, 34) into a pumping chamber and a receiving chamber (32, 34) with said pumping chamber being between said upper portion and said partition member and said receiving chamber (32, 34) being between said lower portion and said partition member; a decoupler attached to said partition member separating said pumping chamber and said receiving chamber (32, 34); and a moving member of elastomeric material disposed in said pumping chamber attached to said decoupler; wherein said moving member is molded from a first elastomeric material and a second elastomeric material with said first elastomeric material having a first hardness level and said second elastomeric material having a second hardness level whereby said first hardness level and said second hardness level are different from one another, wherein said second hardness level is less than said first hardness level, wherein said moving member has a circular shape disposed on said center axis and includes an inner portion and an outer portion with said inner portion being disposed on said center axis and said outer portion extending about said inner portion, characterized in that the hydraulic mount apparatus further includes a cap disposed in said pumping chamber adjacent and spaced from said decoupler to secure said moving member between said cap and said decoupler, wherein said cap includes a protrusion extending outwardly from said cap toward said decoupler to engage said outer portion of said moving member to secure said outer portion of said moving member between said cap and said decoupler, whereby said second hardness level of said outer portion allows for a hinge action in response to said moving member being subjected to a volume change, wherein said decoupler includes a compression plate disposed adjacent and spaced from said moving member for limiting the movement of said moving member. a housing having an upper portion and a lower portion disposed on a center axis and defining a housing chamber (30, 32, 34); a partition member disposed in said housing chamber (30, 32, 34) dividing said housing chamber (30, 32, 34) into a pumping chamber and a receiving chamber (32, 34) with said pumping chamber being between said upper portion and said partition member and said receiving chamber (32, 34) being between said lower portion and said partition member; a decoupler attached to said partition member separating said pumping chamber and said receiving chamber (32, 34); and a moving member of elastomeric material disposed in said pumping chamber attached to said decoupler; wherein said moving member is molded from a first elastomeric material and a second elastomeric material with said first elastomeric material having a first hardness level and said second elastomeric material having a second hardness level whereby said first hardness level and said second hardness level are different from one another, wherein said second hardness level is less than said first hardness level, wherein said moving member has a circular shape disposed on said center axis and includes an inner portion and an outer portion with said inner portion being disposed on said center axis and said outer portion extending about said inner portion, characterized in that the hydraulic mount apparatus further includes a cap disposed in said pumping chamber adjacent and spaced from said decoupler to secure said moving member between said cap and said decoupler, wherein said cap includes a protrusion extending outwardly from said cap toward said decoupler to engage said outer portion of said moving member to secure said outer portion of said moving member between said cap and said decoupler, whereby said second hardness level of said outer portion allows for a hinge action in response to said moving member being subjected to a volume change, wherein said decoupler includes a compression plate disposed adjacent and spaced from said moving member for limiting the movement of said moving member.