An ultrasonic sealing station, for use in supporting an anvil and sonotrode of an ultrasonic welding stack of a form-fill-seal machine or pre-made pouch machine, said ultrasonic sealing station comprising: a housing (20, 21, 22); a linear rail with a portion fixedly secured to a portion of said housing (20, 21, 22); a first bearing carriage slidably received upon said linear rail; a second bearing carriage slidably received upon said linear rail; a first mounting member fixedly secured to said first bearing carriage to be slidable relative to said housing (20, 21, 22); said first mounting member configured to fixedly secure an anvil thereto; a second mounting member fixedly secured to said second bearing carriage to be slidable relative to said housing (20, 21, 22); said second mounting member configured to fixedly secure a sonotrode thereto; characterized in that said ultrasonic sealing station further comprises a first fluidic muscle and a second fluidic muscle, wherein the fluidic muscles (16, 17) each have an expansible chamber that expands radially, accompanied by a corresponding contraction in its length; said first fluidic muscle configured with a first end secured to a portion of said housing (20, 21, 22) and with a second end secured to said first mounting member; said second fluidic muscle configured with a first end secured to a portion of said housing (20, 21, 22) and with a second end secured to said second mounting member; wherein said first and second fluidic muscles (16, 17) are configured to be pressurized to cause corresponding translation of said first and second mounting members (30, 40) relative to said housing (20, 21, 22), to cause convergent translation of said first and second mounting members (30, 40). a housing (20, 21, 22); a linear rail with a portion fixedly secured to a portion of said housing (20, 21, 22); a first bearing carriage slidably received upon said linear rail; a second bearing carriage slidably received upon said linear rail; a first mounting member fixedly secured to said first bearing carriage to be slidable relative to said housing (20, 21, 22); said first mounting member configured to fixedly secure an anvil thereto; a second mounting member fixedly secured to said second bearing carriage to be slidable relative to said housing (20, 21, 22); said second mounting member configured to fixedly secure a sonotrode thereto; characterized in that said ultrasonic sealing station further comprises a first fluidic muscle and a second fluidic muscle, wherein the fluidic muscles (16, 17) each have an expansible chamber that expands radially, accompanied by a corresponding contraction in its length; said first fluidic muscle configured with a first end secured to a portion of said housing (20, 21, 22) and with a second end secured to said first mounting member; said second fluidic muscle configured with a first end secured to a portion of said housing (20, 21, 22) and with a second end secured to said second mounting member; wherein said first and second fluidic muscles (16, 17) are configured to be pressurized to cause corresponding translation of said first and second mounting members (30, 40) relative to said housing (20, 21, 22), to cause convergent translation of said first and second mounting members (30, 40).